Overnight hiking. It's not boring, and you get 7 hours of hiking in with a backpack per day.
And if you're Andrew Skurka, in peak form, you'll get 15 hours in per day.
https://www.keithfoskett.com/the-andrew-skurka-interview/
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And if you're Andrew Skurka, in peak form, you'll get 15 hours in per day.
https://www.keithfoskett.com/the-andrew-skurka-interview/