When I'm not hiking, I'm mountain biking. I had a knee surgery in December and I was back on the bike by April. I'm now up to about 50-100 miles a week depending on the weather. Running just plain sucks for my bone cement and plate leg.. before surgery my roommate and I would run, bike, and go to the gym. Now I'm just mountain biking, lol.
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It is one of the blessings of wilderness life that it shows us how few things we need in order to be perfectly happy.-- Horace Kephart