50K

The 50K is the entry distance into ultramarathon racing. It is mostly run on trail and hilly courses. Find a comprehensive list of 50Ks below.

Sierra Azul Trail Challenge

Spitfire Ultra

Squak Mountain

The Canyons Endurance Runs

Weiser River 50K Ultra and Relay

Folsom Lake 10K, Half, 35K, 50K

Greenland Trail Races

Colorado Springs

Hacienda Hills Trail Run

McDonald Forest 50K

Mt. Si Relay & Trail Runs

Sisters Country 50K & Half Marathon

Tillamook Burn

Grizzly Peak Trail Run

Pine Trail Run - 5K, 10 mile, 50K

Valkyrie Trail Race

Colorado Springs

Leavenworth Trail Fest

Stumptown Trail Runs

Cape Mountain

Smith Rock Classic

Scout Mountain Ultras