WATCH: Runner vs. Base Jumper

Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members! Download the app.

Can Kilian Jornet beat base jumper Tom Erik Heimen in a race up and down the rocky Romsdalshorn in Norway? It’s a test of mountain athleticism and completely different descent modes.

Trending on Trail Runner Magazine

Want to Know What It Takes to Finish at Western States? Just Ask Hellah Sidibe.

Find out what happened when this six-year run streaker and HOKA Global Athlete Ambassador took on an iconic ultramarathon in California's Sierra Nevada