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My friend also refuses to hike more than 7.5 miles in a day, even though he's in pretty good shape. He thinks nothing about going on a 100-mile bike ride, but won't hike more than 7.5 miles.

Part...

Though I try to keep it in the 4 to 5 hour range, I will drive 7 to 12 hours on occasion. Like you, I use night hiking to extend my trail time. I'd say I've night-hiked on 40% of my trips this year....