I got back Sunday evening from a three day backpack trip and had thought my legs were the strongest thing on my body.
From 7,200 ft to 12,500 ft in six miles and day hikes to 14,000 ft, my calves now hurt like they have never hurt before in my life! I can honestly barely walk.
I hope this will translate to a longer pull at the front of the pack!
Backpacking seems to be a great biking companion sport.