Like HowStuffWorks on Facebook!

Is It Possible: Extreme Unicycling

Kris Holm is the world's most extreme downhill unicyclist. Watch as he rides the rail of a 120ft tall bridge with busy oncoming traffic to his right and certain death to his left.


Most Watched in Outdoor Activities

Most Watched in Outdoor Activities
2:17

Is It Possible: Extreme Unicycling

Most Watched in Outdoor Activities
1:48

River Monsters: How to Catch a Nile Perch

Most Watched in Outdoor Activities
1:10

River Monsters: Have the Right Gear

Most Watched in Outdoor Activities
2:27

Tribal Fishing With Jeremy Wade: Fishing Psychology

Most Watched in Outdoor Activities
1:21

River Monsters: Be Alert

Most Watched in Outdoor Activities
1:16

River Monsters: Hooking a Bull Shark

Most Watched in Outdoor Activities
1:12

River Monsters: Have a Plan

Most Watched in Outdoor Activities
1:36

River Monsters: Think Like a Fish

Most Watched in Outdoor Activities
1:20

River Monsters: Bull Sharks in South Africa

Most Watched in Outdoor Activities
1:26

River Monsters: Bitten by a Bull Shark

Most Watched in Outdoor Activities
2:00

Whale Wars: Boiling Point

Most Watched in Outdoor Activities
1:14

River Monsters: Talk to Locals


Recent Videos in Outdoor Activities

Recent Videos in Outdoor Activities
1:39

Swamp Wars: Wrangling a Super Python

Recent Videos in Outdoor Activities
2:27

Tribal Fishing With Jeremy Wade: Fishing Psychology

Recent Videos in Outdoor Activities
1:12

River Monsters: Have a Plan

Recent Videos in Outdoor Activities
1:48

River Monsters: How to Catch a Nile Perch

Recent Videos in Outdoor Activities
1:36

River Monsters: Think Like a Fish

Recent Videos in Outdoor Activities
1:10

River Monsters: Have the Right Gear

Recent Videos in Outdoor Activities
1:14

River Monsters: Talk to Locals

Recent Videos in Outdoor Activities
1:21

River Monsters: Be Alert

Recent Videos in Outdoor Activities
1:16

River Monsters: Hooking a Bull Shark

Recent Videos in Outdoor Activities
1:20

River Monsters: Bull Sharks in South Africa

Recent Videos in Outdoor Activities
1:26

River Monsters: Bitten by a Bull Shark

Recent Videos in Outdoor Activities
2:17

Is It Possible: Extreme Unicycling