I hope you're recovering well - that was a monumental adventure! I think that you'll find that the memory and the pride in your amazing accomplishment will be worth all this fatigue. I did a two day 50 km hike in the mountains awhile back - I was asked to go when I was really going downhill in the first couple years after diagnosis and had to train like crazy to be able to go - and it let me think of myself as an athlete instead of a patient. I've felt better about everything ever since. I'm very proud that I'm in better shape than a lot of people my age who don't have PD.