Mountain Camping Trip

Thank you for reading, please rate and feedback is always welcome. Reminder, all characters and locations are fictional, and everyone is 18 years of age or older at the time any sexual encounters occur. This is also an entry into the Literotica Nude Day Story Contest 2025.

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Family vacations have always been the normal thing for us. My parents would always carve out time from work in early June for a weeklong trip somewhere. We would be out of school, and it would also be a celebration of their birthdays.

As a family, we loved hiking, so many of our trips were backpacking through the wilderness. Although there were a couple of recent years that we did some urban hiking, as they would like to have called it, as we trekked through the urban jungles of New York and Washington DC.

This year is going to be special, as Peggy, my mother, and Kirk, my father, are going to be turning forty while on this trip. It also coincides with their wedding anniversary, which will mark twenty-one years. They wanted to celebrate by going back to the Colorado trails where they took their first vacation together as a couple.

They have been back to this location only twice since then. Two years after their honeymoon and then again about ten years ago. However, this is a place that they wanted to share with the entire family once the right time rolled around.

Well, almost all the family, because my younger brother will not be going with us. He just turned nine in March and will be staying with our Grandparents during the trip. Ben just hasn't quite gotten into hiking yet, but my parents say we didn't get into hiking until eleven, so he has a couple more years.

Jody, my sister, just turned twenty in March, just a couple days after Ben. She is the athletic type with a gorgeous body. Just about every morning, she gets up at the crack of dawn and goes for a mile run. She calls it a warmup for her body.

The mile run is also the distance from our family house to the gym that she works at. Jody teaches a yoga class and a spinning class in the mornings. Depending on the time of year, she then runs another two miles to campus. She usually has enough time to slip into the gym at school and take a quick shower before going to her classes for the day.

Most days after class, Jody will change back into her running attire and run another two miles back home, completing basically a triangle through town. The exception is on Thursdays, where she takes a longer five-mile run along the river with the jogging club. The club will run a little further as they return to campus, but the return route passes very near our house, so she just peels off.

Jody just likes to run, but her boyfriend is also in the jogging club, and I think he is the excuse she uses for being in the club every week. This was also the excuse that she gave my parents for why she still wanted to go on the run with the club today. They reminded her that we were leaving for the mountains this evening, as soon as she got home.

Once Jody did get home, she quickly headed upstairs, and I soon heard the water running in the bathroom. With all the running she does, I am thankful that she always jumps in the shower upon arriving home. I was in my room, getting my final supplies put in my pack for the hiking trip this week.

Heading downstairs, the bathroom door was open most of the way, but the shower was running. Jody must not have latched the door, and it had worked its way back open. As I turn the corner to head down the stairs, the shower curtain flies open. There stands my naked sister and her body on full display.

I stand for a moment as I admire her naked body. Her breasts are like water drops on her chest. Not exactly small, but maybe a good size to cup my hands around. The curves of her legs leading up to... Oh my, a shaven pussy.

I think my gasp may have been audible enough to hear, so I quickly headed down the stairs before she had a chance to see that I was spying on her. At the bottom of the stairs, my father was waiting and yelled up, "Hurry up Jody, we need to be leaving!"

Mom was already in the car when I walked outside. I tossed my pack into the trunk and climbed into the backseat. "You ready for a fun hiking trip, Vance?" my mother asked. I nodded my head and tried to get comfortable. I had gotten quite hard after seeing my sister naked, and didn't want to try and adjust myself in front of my mother.

As I waited in the car for the rest of my family, I started to think. I had just turned eighteen in March and could be doing almost anything this summer. But here I was about to take a weeklong hiking trip with my parents and my sister. My hot sister who I had just seen naked for the first time.

Although I have masturbated to porn and seen naked bodies in movies, I am still a virgin. Seeing my sister's body is the first time that I have seen a woman naked before, at least one that wasn't on a screen of some type. Unfortunately, the locker room after gym class in high school provided ample opportunities for me to see naked men, which I found undesirable.

Finally, my father and sister climb into the car, and we are off to the mountains. We talk for a while about basically nothing, which is the same conversation that we have at dinner each night. Eventually, my attention is drawn to my video game, but I can see my sister out of the corner of my eye.

Her shirt is a little tight and I can see the outline of her sports bra. She is also wearing yoga pants, which is not the outfit that I would expect to see her wearing for a hiking trip. About an hour into the ride, I thought I seen her glance in my direction and smile. I don't think she seen me looking at her, or she was being coy about something.

As we arrive at the trailhead, we collect our bags with everything that we would need for the hike. After studying the map, our first campsite is about two miles up the trail. An easy hike for us, and we should have just enough sunlight to get there and get set up.

Apparently, my sister and I were anxious to get started, as we waited at the trailhead for my parents to catch up with us. "Lead the way, Jody," my father said. "Set a pace that we all can maintain so we arrive together."

A couple minutes into the hike, I began to watch my sister's ass as she walked in front of me. Especially in the tight yoga pants, I never have taken the time to recognize how perfect her ass really was. It's tight, but also perky at the same time. I feel my cock start to grow and I take a quick moment to purposely walk into a tree branch so my hand could look like it was doing something else other than adjusting myself through my shorts.

I tried to stop looking at my sister, but the images of her this morning kept returning quickly to my mind. With each step, I continued to feel blood pooling in my hardening cock. I knew I was going to need more than another adjustment with a brush of my hand.

About a mile into our hike, we reach a beautiful lookout point over the valley below. The rest of the family takes a moment to sit and enjoy the view. I announce that I need to use the restroom and point in a direction off into the woods. I walk a short distance into the woods and find a large tree to hide behind.

I quickly dropped my shorts to the ground and grabbed my swollen cock. As I started stroking, it was exciting to whip it out and masturbate in the middle of nature. I quickly found that I had too much friction and wasn't getting a good jerk that was going to lead to a quick release. I started working my mouth to build up saliva and soon had enough to spit into my hand.

"Ah, that's better," I quietly said to myself as my hand returned and started to glide up and down with the reduced friction. I lean back against the tree and close my eyes to enjoy the moment. Not surprisingly, I start to see images of my sister getting out of the shower and my hand moves faster.

With every pump I grew closer and closer to a very needed finish. I start to moan right as I know I am past that point of holding back and it feels so good. Right as my load is flowing through me on its one-way trip into the woods, I hear Jody say, "Ewww! What are you doing?"

I thought about trying to hide, but how could I. I was caught with my pants down, my hand around my cock and right at the exact moment that my load was being ejected. I couldn't move and simply had to wait until my body was finished with the moment.

Embarrassed, I asked, "How much did you see?"

"Ah, everything," she responds as she is looking straight at my crotch and the rapidly deflating cock.

I feel a little drip of cum dripping down my hand and I wipe it on my shorts before I pull them back up. "Please don't tell dad!"

"Uhhhh, I guess I won't," she said, "but did they tell you the plans for this trip?"

"No, but I assume it is to admire nature," I respond. "Why, is there something else going on?"

"You'll see," she said with a smirk. "For now, get cleaned up. We're hitting the trail again."

For the rest of the hike to our campsite, I hung out in the back of the pack. I didn't want to follow my sister again and keep looking at her ass and have another issue. The only tent I wanted to pitch now was the one that I was going to sleep in tonight.

Arriving at the campsite, it was a large grass field that was surrounded by the woods that we had been hiking through. Around the perimeter of the field there were about eight designated camping areas to pick from. There was another group of tents on the far side of the field and my father selected a location that separated us from them and the trails.

The sun was getting low in the sky and my father suggested that I go with him to gather firewood. The ladies would hold back and pitch the tents for us. We didn't have to walk far into the woods to find some great firewood to bring back to camp. We picked up a couple of armfuls and headed back.

I dropped my pile near the firepit, while my father dropped his pile on the edge of camp, a safe distance from the fire, but close enough for us to quickly grab when the fire burned down. Even in June, the nights can get cool in the mountains. I got the fire going and my father helped the ladies put the final touches on the tents.

We sat around the fire and cooked dinner while the sun finished setting behind the mountains. At some point, I noticed the fire was lit in the firepit at the other campsite across the way. We again talked about nothing, but no one brought up the topic of my sister finding me jerking off in the forest or what the plans were for the rest of the week.

It was about 11pm when we finally crawled into our tents and our sleeping bags. I quickly went to sleep, but around 3am, I had to pee. I considered holding it, but I thought I better relieve myself. There was just enough moonlight that I could see my way into the woods and find a tree to pee on, as I didn't want to walk across the large field to the restrooms on the trail.

On the way back to my tent, I thought I heard sounds but thought for sure everyone was asleep. Maybe it was a wild animal in the woods, but the sounds got louder as I got closer to our tents. It sounded like sex noises coming from the tent my parents were in. I certainly didn't want to disturb them, if this was the case. I quietly made my way back into my tent and fell asleep for the rest of the night.

The next morning, I am awoken by Jody shaking my foot through the sleeping bag. "Wake up sleepyhead. You can't sleep all morning."

I glanced at my watch to find that it was 10am. It is amazing how the crisp mountain air allows me to sleep. I crawled out of the tent to find that my sister was the only one left in the camp. Still sleepy, I ask, "Where are mom and dad?"

"They took a quick hike this morning but left me here to wait on you sleepyhead!" she said. I get dressed, grab a quick breakfast bar, my canteen and a small pack with hiking essentials, and join my sister as we head down the trail.

After about fifteen minutes of hiking, we come to a fork in the road. There is a sign alerting that the path to the left is adults only. I started to go right, but Jody quickly pulled me to the left. "This way little brother, unless you are not an adult," she said.

We continue around the corner until we come to another public restroom. My sister stops and says, "Okay, I can't keep the images of what you were doing yesterday out of my crazy mind, and I want to see more. We are going to continue down to the lake, but you are going the rest of the way naked."

"No!" I yell.

"Do you think you really have a choice?" she replies. "Or do you want me to tell dad what you were doing yesterday?"

I thought about it for a moment before deciding that I would rather face the embarrassment of being fully naked in front of my sister. "Just as long as dad won't find out?" I confirmed before I stepped into the restroom.

As I took my clothes off and stuffed them into the bag I was carrying. The door to the other restroom opened and I assumed it was my sister going in. Was she also going to join me in continuing naked onto the lake?

As I open the door, I try to conceal my limp cock with my hands. I assumed my sister was going to be the only one outside, but my heart skipped a beat when I also seen our mother standing with her.

"What?" I started and finally continued, "What are you doing here mom?"

"Jody told me about what happened yesterday while we were setting the tents up," she said. "I was hiding in the other restroom, waiting for you to arrive."

Jody piped up, "Move those hands, NOW!" She was forceful, but she surprised me with what she said next. "You got to see me totally naked after my shower, now I get to see all of you."

"You knew about that," I asked. "This intervention is because I had seen you naked in the bathroom and not because you caught me masturbating?"

"Masturbating!" my mother quickly says. "Son, I didn't know that, but after today, you may never need to do that again."

I finally moved my hands, and my mother said, "You should never be ashamed of your body." With that, she looked at my sister and together they both removed their shirts to stand in just a sports bra. They still had their yoga pants on, but I stared at their bra covered breasts.

I had only seen my sister's breasts for a moment yesterday, but I remembered them being a little larger than today. Most likely because they were now being squashed by her sports bra. My mother was filling out her sports bra nicely, with a little extra cleavage spilling out in the middle.

Both seemed to be a little perky in the still cool morning air and their nipples were poking at the fabric. Even with just their shirts removed, I was only able to delay my growth for about a minute. Next thing I knew, I had a full boner sticking out from my body.

"Wow," Jody said, "I have seen hot dogs longer than that!"

"Be nice to your brother," my mother said. "Your father is a little on the shorter side as well and he still gets the job done every time we fuck."

"Mom!" Jody blurted out, "Language."

"What?" she continued. "I am sure Vance has heard that word before." She turns to me and continues, "Fuck is when a man..."

"Yes, Mom," I interrupt. "I have heard that word before and know what it means."

We continued walking down to the lake. As free as I felt yesterday as I masturbated, walking naked today took me to a whole new level. The trail was winding as it worked down to the secluded lake. About ten minutes into our trek, I had started to get used to walking naked with the ladies. Because of this, my once erect cock had softened again.

My mother happened to notice and mentioned, "Oh, nothing soft about today. Let's keep you nice and hard."

She quickly pulled up on her sports bra, allowing her large breasts to plop out. My sister followed mom's lead and removed her own sports bra. I stopped in my tracks and stared at their chests.

"Baby, if you are staring that hard at my chest," my mother said. "Take a look at this."

I was still staring at my mother's breasts and didn't truly comprehend what she said. She had to wave her hand in front of my face to get my attention and then points down. She had slipped out of her yoga pants and was standing completely naked in front of me.

My sister had also done the same and was also standing naked again in front of me. From yesterday, I knew her pussy was completely shaven. However, I took a good look at my mother's pussy, and there was a skinny landing strip of hair just above it.

My cock immediately grew back to full attention. "Perfect," my mother said. "We are now all dressed for the beach."

"Won't there be other people at the beach," I quickly asked.

"I hope so," my sister comments. "It wouldn't be a nude beach without naked people using it."

"Well, that explains the secrecy of this trip," I comment.

"There is one more surprise," my mother says. "But that will need to wait a little longer."

The three of us hiked the rest of the trail down to the lake, with my cock bounding around in front of me. Occasionally I would drop back and watch their asses as they walked. Soon, my mother would turn around and smile at me. I know she was checking out her own son and was liking that we were sharing this moment as a family, minus my father.

When we reached the beach, there were maybe twenty other people enjoying themselves. Some were lying out on the beach. Others were throwing frisbees around. There were even a couple of brave souls in the water, which I assumed was still quite cold.

We made our way over to the covered bar area to grab a drink. My mother ordered some type of cocktail, my sister ordered a wine cooler, and I ordered a Red Bull.

Suddenly there was a tap on my shoulder and a request of, "Make that two, please. We are going to need the energy."

I turned around to find my father standing naked behind me. "I am so glad the ladies were able to talk you into getting naked with us," he commented.

Once we got our drinks, we migrated to one of the tables to sit in the sun for a while.

As we relaxed, I asked, "please fill me in on what is happening. Well, other than the part that we are sitting naked as a family on a nude beach overlooking a lake in the mountains."

My father started, "This is where your mother and I came for our honeymoon, twenty-one years ago. It is where your sister was conceived."

I had to look at my sister and admire her body. Thinking that she was the result of the fun my parents had while they honeymooned at this same location.

My mother continued, "This is also where we returned two years later and I was able to also get pregnant with you, my son."

Great, I thought to myself. I am also the product of fun my parents had at this nude beach.

"This is also where your little brother was conceived," my mother said. "Making this a special place for this family."

"Your cock is dancing," my sister said. "I like watching it. But I have a serious question for you?"

I took a sip of my drink and commented, "I'm all ears, sis. I don't know if anything can get stranger than sitting naked with my family on the same beach I was conceived at."

"A little back story first," Jody says. "On my birthday, my boyfriend asked if I wanted children. Of course, I said that I did. He said that he had a rare condition that caused him to be sterile and his sperm would never be able to get me pregnant. That didn't stop us from trying multiple times that night."

"Oh, the images," I said. "I just had an image flash through my brain that I was the one having sex with you."

"Well, good," she continued, "Because that is what I want to ask you about. Would you get me pregnant?"

"What?" I blurted out. "You want me to? Here? Now?"

"Yes, I seriously want you to get me pregnant." She said calmly. "Of course, we should do it multiple times over the course of this week to make sure we can properly achieve that goal."

My father jumped in, "You see, this place seems to be a magical location. I'm not sure if there is actually any magic happening here, but it is such a surreal place to enjoy that special moment with someone.

Jody continued, "It has been a long-standing tradition in my boyfriend's family that the bride has a decent baby bump during the ceremony, and he has conditionally proposed to me, pending the outcome of this trip."

"So, you want to simply jump me right here, or do we go down to the beach?" I sarcastically ask.

My mother interrupts, "No, you two would head over to the Release Center." Pointing to a covered area just a little further down the beach.

"Although sex on the beach sounds fun, the sand doesn't play nicely if it gets into certain places," she added.

I glanced again in the direction of the Release Center and there was a couple returning from that direction. They were giggling and rubbing their bodies together as they walked by our table.

I stood up, took a big slurp of my drink and extended my hand to my sister. "I would be honored to lose my virginity for such a noble cause. Shall we make our way to the Release Center?"

We all four stood up as my sister commented, "Oh, you're a virgin. I'm always flattered to be someone's first. You will be the fourth cock to ever grace my pussy."

"Why are mom and dad following us," I commented as we headed down the beach to the center.

"This is still a public space," my mother said. "Anyone can enter and watch or have fun. It is just a little separated so that someone doesn't have to watch or hear it happening if they choose not to. Your father and I are horny enough, I think we will also participate."

Before I could really respond to the fact that my parents were also going to be having sex at the same time, we walked into the Release Center. Scattered around the room were different chairs, couches and beds that could be used, depending on the position that was desired.

There was a couple using one of the chairs, where the woman was facing us while riding the cock of her man. She waved at us as we entered but soon screamed with pleasure. I felt a little twitch inside me as I watched her orgasm and knowing I was about to have that pleasure with my sister.

Jody took my hand and pulled me to one of the beds in the room. She jumped on the bed, spread her legs and screamed, "Fuck Me!"

I was nervous. I was nervous that I might do something wrong my first time. I was nervous that I was going to have sex with my sister, and I was nervous that it would be in front of my parents. For some reason I was also nervous that I might not be able to get her pregnant, as she requested.

Jody grabbed my free hand and pulled it to her pussy. "Look Vance," she said. "You just touched your first pussy, now follow your primal instincts and Fuck Me! Don't worry about anyone or anything else other than you driving that sexy piece of meat deep inside of me."

She was right. I was already naked, and this room is only used for one thing, sexual release. I didn't want to stop so I crawled between her legs and grabbed myself to align with her pussy. I looked again at her face, and she mouthed the words, "Fuck Me!"

I touched her pussy with my tip, and she was right about my primal instincts. My hips almost on their own shifted forward, pushing my tip between her lips. She was so wet, and I effortlessly slipped my cock inside my sister until our bodies connected and I couldn't push any further.

My hips started to shift backwards, and my cock followed along. In and out I slipped, causing both of us to start to moan. She was so wet that I almost wasn't getting the right friction needed to induce an ejaculation. Eventually I recognized that funny feeling that I get when I get close but still could still stop if I wanted to, but this was too exciting and there was no way I was going to stop.

"Oh, God, I'm Cumming," I initially thought was spoken by my sister. I looked down again at her and she was still moaning with every stroke. I realized that it was my mother that was currently in an orgasmic bliss, and most likely was milking my father's cock for everything she could.

This change of attention away from what I was doing with my sister was enough for my control to be lost. My breathing quickly changed to short breaths with a grunt on each exhale. A couple more thrusts and my load splashed the inside of her pussy, so it could do its thing.

I stayed motionless and held inside her while spurt after spurt joined in on the trek to get my sister pregnant. I felt her tighten around me and watched as her body twisted side to side on the bed as her orgasm exploded inside.

I finally had to pull out and she handed me a pillow from the bed to put under her hips. Once the pillow was in place, I dropped to the bed and cuddled with her. I cupped one of her breasts with my hand, which I thought was strange that I lost my virginity before touching a breast.

We relaxed for a moment before my parents walked over and helped us up from the bed. "Now, the process of you getting pregnant may already be happening inside of you," my mother said as she patted Jody's stomach. "But to be safe, you two need to have sex every day while on this hiking trip."

"Everyday?" I questioned.

"What?" my sister chimed in. "You're too good now to have sex with your sister that often?"

I thought about it for a moment and said, "Of course I can have sex with you whenever you need it, sis."

As we walked back to the beach, my sister whispered in my ear, "Mom has a pussy too. Just saying." She winked at me as we continued to walk, and I knew what she meant.

"Remember I said you were the fourth cock to grace my pussy." She added. "The two boyfriends that I have had, and then I had daddy's cock just after my birthday, when I told them about the plan to get pregnant. He tried, but the timing must not have been right."

The rest of the day was a blur. We relaxed on the beach. We went swimming in the lake, which was warmer than I thought it would be. Finally, it was time to head back to camp. We hiked back up the trail until we got to the restroom. "No nudity past this point," my father said.

None of us jumped into the restroom. We just slipped into our clothes right there on the path before continuing our hike back to the campsite.

The rest of the week was much the same. Fuck, relax, swim, repeat. The next couple of days, my sister wanted me still in the missionary position, as she had heard it was the best for getting pregnant.

The last couple of days, we tried doggy style and cowgirl. I like watching her breasts while she rode me in the cowgirl position.

My parents worked their way closer each day. They started off across the room, to give Jody and I the privacy I think we were looking for. Near the end of our stay, they were on the couch right next to us.

The final night, I was awoken by someone crawling into the tent. At first, I thought it was Jody who wanted one final round, but it turned out to be my mother. "I couldn't wait any longer. I need you inside of me, son. Don't worry, unlike your sister, I am on the pill."

My mother unzipped the sleeping bag and pulled down my shorts. It was dark enough that I had to feel my way around her body to find out she was already naked. A hand grabs me right before I feel the wet surfaces of my mother's pussy slipping down over me.

I thought about being quiet, but my mother was the one making the noise. It took me longer to get to that final moment, as I don't typically have sex immediately after waking up. Eventually my mother got her wish and received my deposit.

She removed me from her pussy and backed her way out of the tent. "Thank you, son," she said. "There is always more of that when you need it after we get home." I was just about ready to fall asleep again when I heard the same noises coming from my parents' tent. Apparently, my father wanted a piece of mom's action tonight as well.

On the ride home the next day, my sister suddenly broke the silence with a question. "I don't feel pregnant. Do you mind if Vance and I fuck right here in the backseat?"

"Go right ahead," was the response from our mother. "But put something under you so nothing drips on the seats." I had my clothes off before Jody could even turn and attempt to ask me if I wanted to do it.

To be fair, having sex in the moving car was fun, but I think she was already pregnant and just wanted to pass the time during our ride home. A couple of weeks later, she took the test and confirmed that we succeeded in the one task she had for our trip. Her boyfriend proposed to her a couple weeks later and they are planning a winter wedding. By then, she will have a decent bump to showoff to everyone.

Jody is wanting to wait to find out if it is a boy or a girl. However, the timing looks to be right so that both the new mother and her child will have the same birthday, which is just two days after mine.