short answer, no not really. Not the way you describe it. I imagine there are so many factors that come into play, how much stuff you carry on your bike, how you pace yourself, how well you eat, how well you sleep etc etc. I mention food as it is so important to eat really well, lots of veggies, fruit, meat, you name it-as we work pretty hard day after day on tour. Same with sleep.

Im pretty average riding strength wise I think, but I always remember coming back from a trip being a lot stronger. Hills that were quote "hard" before are suddenly not much, and I can go up them numerous times easily, so the reality is that I am stronger after a trip, and if I take care of myself and pace things properly, Im not exhausted--Ive got to be honest though, its nice to have the break at the end (oh, another topic, is "break days" during a tour, they are important for me to rest up now and again)