By JoxMau

You find me on my laptop when you come home. You can tell I am out of sorts.  We have been in a relationship for a while that is periodically Dom/sub with lots of chastity during the kinky months.

This was near the second week of our vanilla period.  You could tell I was getting restless and was done with the vanilla break.

You come over and give me a kiss on the top of my head and ask if I am doing okay.  It is in that moment you see what I had been looking at.  It wasn’t the normal rubber and leather pics that you had come to expect.  Nor was it pictures of the traditional hot muscular guys that flood the web.

You reach over and take the laptop away from me and start looking at all that I have been browsing for the day and then you continue to go back and look over the past week or so.

They were all pictures of endurance athletes. Runners, cyclists and swimmers.  But the majority were of cycling.  You knew I kept healthy but you also knew I was not an athlete.  You knew I did some cardio when at the gym but that was about it.  You had never seen me on a bike nor knew if I could even swim. You suddenly begin to feel insecure. You wonder if I wanted you to have the body that comes with endurance sports and not the muscle bear body you pride yourself on.

You look at me and ask if that is what I wanted you to look like.  I laugh and say that  you are my perfect muscle bear.  I say I just started to check those pictures out.  Then I confess and tell you that is a lie.  I had been fantasying about being like those cyclists and runners for years, even before we had met.   I admit I wanted the challenge and wanted to experience the extreme discipline that these type of athletes must endure. I explain there is so much discipline behind those athletes for the performance that they have that I have always been mesmerized by the implied disciplined life behind them.  I apologize and explain that I had not shown you them or told you about this fantasy because I didn’t want you to become insecure, and I just want you to be happy so I repressed the desire to be truly disciplined in such a way.

I point to a pic of a cyclist that I had kept going back to.  It was of a cyclist specialized as a climber and who was incredibly thin.  I explain that climbers have to be super light because every ounce would slow one down going up hills and mountains. I admit that I could barely even imagine the discipline it would take in training and in nutrition to do that. You can’t imagine it either. You lift weights and know your way around the gym.  But this type of athletics was completely new to you.

You look at me and a smile starts to form on your face.  You turn the laptop to face me and tell me that you would be right back.  You go and get one of the acrylic chastity belts that we have in our kink closet.  You stand behind me and tell me to look at the super skinny cyclist in his cycling kit, and start to stroke me.  You whisper in my ear telling me to imagine myself as him—imagine the exhaustion in my legs and the hunger in my stomach and my heart. You stroke me faster and eventually have me cum in an explosion.  You quickly wipe me down and put the chastity belt on me with little fanfare you then me to go my bed and get some sleep. As I get up to leave I see you sit down with the laptop and a pad of paper and start taking notes.

I wake the next morning feeling refreshed.  I am on the tough army cot we keep in our spare room that we never decided what we were going to do with.  Usually when you say “my bed” it meant the cot when you say “our bed” it meant the master bedroom. I am excited because I am ready for this vanilla downtime to end and to get back to some Dom/sub action.  My straining cock in the chastity belt agrees and that you had locked me in meant that you were ready too.  As I leave the room and entered the hall you call me into the living room.  I feel light since the last secret I had kept from you is finally in the light. I feel exposed but I don’t feel judged since you were so understanding last night.

You tell me that I had given you a lot to think about.  You have explored the images I had been looking at.  You have also started researching endurance sports.  You tell me that you are willing to explore this for me but there would be new rules.  You tell me that I was right.  The best cyclists are thin as rails with body fat percentages regularly below 10% and closer to 5% for the pros.  You actually learned the distances of a full length triathlon of a 2.4 mile swim, 112 mile bike ride and finishing with a full marathon of 26.2 miles. You smile at me with a grin that is new and almost menacing.  I know this will be new territory for both of us and I am feeling a rush of excitement and not just in my cock.

You agree that this type of athletic endeavor requires a lot of discipline.  And after some thought you have decided that you will be more than happy to provide that discipline when my own self-discipline was waning.  However, it will be a lot of work and will be a massive commitment from yourself. So you offer me the chance to pursue this challenge and live my secret dream but it will need to be in exchange for becoming your slave.  Our relationship and our marriage will not be a Dom/sub relationship any more but must become a Master/slave relationship. You explain that this needs to be long-term for it to even get close to living my fantasy. And that you cannot trust yourself during some moments of weakness and take pity on me and let up on the discipline.  If we are going to do this, it will have to be done through slavery.

However, explain that I could buy myself out of slavery after hitting a set series of goals.

1. I would have to run a qualifying time for the Boston Marathon and then run it.  You looked it up and told me that would have to be a sub 3-hr marathon.
2. You have picked up on me obsession over the skinniness of the cyclists especially. I would then have to be skinny, which you defined as sub 7% body fat and sub 29-inch waist. Those stats would have to be maintained for at least one year.  I start to object saying that 30 inches was barely even reasonable for most guys.  You look at me with a hard stare.  You tell me that I am not most guys and that I will be a slave to a diet. You remind me that this was going to be hard and it was going to be demanding. And that is what I really wanted. My fantasy is to be disciplined. And now you have decided that the goal size will be 28 inches instead.  You smile again and told me that there are riders on the Tour de France who weigh in the 120-130 pound range, and that I should feel lucky that you had not added a weight requirement.  I say, “Yes, Sir” and try to remain silent.  You reassure me that this would be a slow and steady transformation and that he always wants be to stay safe and healthy. You promise to get good expert advice on training and nutrition, because you want me to be disciplined not injured.
3. For the long-distance cycle goal to buy myself out of slavery, I would have to do the Bike Across America cycle race.  That would be just over 3000 miles. I would be expected to finish before the 9th day began. Records are in the 7- day range so this 8-day range could be considered reasonable.  He explains that that would mean I would have to ride about 20-22 hours each day at a steady average pace of 15-17 miles per hour. The Rockies will give me those mountain climbing experiences that I really wanted.  But this is achievable by amateurs and not just pros so with training I will be able to accomplish it.
4. Speaking of climbing you explain that I will need to cycle a one-day grand fondo of at least 100 miles and 8000 feet of elevation gain for my shorter distance goal. I will have to get a medal in my age group with at least 20 participants in my age group.  If there are less than 20 in my age group I just have to come in first.  You would have final say if an event qualified or not.
5. There would be some one-day swim challenge to be decided.  Something like the 12.5 mile swim around Key West. Doing that in less than 6 hours would be a reasonable challenge you say with a grin.  Although you tell me that you might change that to an ultra swim. Seeing the confused look on my face, you tell me that it is a swim of at least 33 kilometers/20.5 miles. Your smile grows. There is one up in Canada that is in cold water with a cutoff time of 9 hours. Your hand falls down into your lap and you start to stroke yourself through your pants, and rhetorically asking, can you imagine. I shivered.  I cannot imagine. You look into my eyes and your smile turned into a grin. You say that I deserve something truly challenging.  You assure me that I will not have to win such a race just get a qualifying time.
6. You tell me that we will then have to put it all together and do triathlons.  Since the average time is 12.5 hours for a standard Ironman length triathlon. And you expect better than average I would need to do a full Ironman in sub 12 hours. After seeing the shocked look on my face, you explain that will take years of training to get to that point, but that constant relentless discipline that would be required is what I want.
7. You continue to with an additional requirement.  Specifically that we will need to celebrate the recent record being broken of consecutive Ironman distance triathlons of 105 in 105 days.  I almost faint when I hear this but you continue to explain that I will “only”  need to do 30 full Ironmans in 30 days. There won’t be any time goals just the need to do 30 in a row.  You silence me by explaining that you have seen me secret bookmarks of the stories about these records. You explain that you know I can do it.  It will just require training, which may or may not require some double, triple or even quadruple Ironmans you add with the sexiest yet most frightening wink I had ever seen.
8. Lastly, you tell me that since this will be a TPE-based relationship that you can add any additional requirements that you saw fit. For example, you explain that you saw that I was following a few ultramarathoners and ultracyclists on social media but you will need to research more before deciding. For example, you said you found a race that is 268 miles long with a time limit of 168 hours, in the mountains in the winter. You tell me that you were not sure you were that brutal.  Your hand returns to your crotch, and then add that you won’t be brutal the race will be brutal, you would just prepare me for the race. He asks me if I can imagine the discipline that would take, and if I can imagine the commitment he will need to make sure I have that discipline. We stare at each other. I was not sure either of us took a breathe. You break the silence and lightly chuckle, and say that of course you may not add any wildcard requirements and may even lighten some of the other requirements, but I should not count on that. My seeing the your cock straining in your pants, reassured me that you were already making plans for what I will need to endure.

All together, to ensure I don’t slack in any one area to fulfill the goals of another area I will need to achieve all seven or more goals within a 365-day period. You explain that after I accomplish all of that I would be free if I would want to be.  I will just need to buyout my slavery with sweat.

I remain on my knees in shock.  This is absolutely crazy.  I can’t even form words.  This would be years and years of strict endless training.  Even with those numbers I wouldn’t be close to pro performance but it was still staggering.  My mouth just hangs open.  You smile at me again.  You tell me if I am wanting this that you will commit to it.  And you already have been researching a 6-month beginner marathon plan.  You smile again and tell me that you doubt that I would Boston qualify that first marathon but that would allow for even more training.  You console me by explaining that as a slave you won’t expect me to hold a regular job anymore, which I hated anyway. And since you work from home it will be easier for you to monitor me after I quit my job.  I unconsciously whisper to myself “quit my job?”  I keep my eyes down, “May I ask a question, Sir?” “Yes”, you respond.  “How are you so excited about this when you knew nothing of it just a day ago?”  I almost forgot but I add “Sir” after a short pause.  You lean down and lift my face up to look at you by raising a hand under my chin.  You tell me to look at you and then tell me that I am stupid and an idiot, because you are excited because you love me.  You tell me you want me to be happy and that a full TPE relationship will do that.

You have seen how the oscillating between vanilla and submission has taken a toll on myself.  And if it was going to be TPE it should be a full slavery relationship but that he still wanted it to be in service of something I wanted, but it was still going to be his choice.  That is why I will need to make a decision by the end of the week.  You promise that you will never give up on me until I looked like the  photo you had jerked me off to last night.  I would have to perform or be punished.  And you promised that the rest day every other week would be fun.  My heart jumps from elation to outright fear to feeling loved and being loving.  Tears start to form and I ask when do we begin. You tell me to hold on.  We both need to cool off and wait the week.  This is going to be a big commitment. Just as big if not bigger than our wedding vows.

I lean up on my knees and kiss you.  You stand up and take me by the hand to the loveseat on the other side of the living room.  Until Friday we will remain lovers and think about what was about to come. And to enjoy ourselves freely although I was still locked up, but I don’t ask for release.

Metal would like to thank the author, JoxMau, for this story and welcome him to the Prison Library!