Extreme hiking:

Basically, Keizer goes on long run-hike-climbs through wilderness areas, and up and down mountains, to break records that others have established.

Last summer in New England, Keizer completed the 273-mile Long Trail after four days, 13 hours and 15 minutes.

The time was 2 hours, 3 minutes faster than the mark set by Ed Kostak in 2000 for the nation’s first long-distance hiking trail, which spans Vermont north to south along the Green Mountains.

It wasn’t easy: Keizer collapsed and promptly fell asleep at the finish line.

Now, see, if you want to go fast through the wilderness, there are these things called wheels attached to clever devices called bicycles. Of course the mountain-biking masses assure us that such folly would be unnecessary if more trails were open to bikes.