Man Climbs 11 Miles Nonstop Up and Down Second Flatiron

Watch Justin Simoni embark on one of the strangest climbing accomplishments ever. He climbs up and down Boulder, Colorado’s Second Flatiron 20 times in a row!

The Second Flatiron is one of Boulder’s more free-soloed rock climbs. It’s a gentle slab the whole way up. Some parties choose to rope up, others go ropeless.

Simoni took 16 hours to complete 20 reps on the Freeway route, which is rated 5.0. Nolan Anderson documented the feat, and it looks downright crazy.

For context, Simoni‘s climb is equal to more than three times up Yosemite’s El Cap — at least in vertical gain.

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