50K races in Colorado

Find the list of upcoming 50K races in Colorado races below.

26 races found

Search filter

Is Registration Open?

All

Race Date Range

States

Cities

Related Searches

All Race Distances

Sort by

The Grand Traverse

Crested Butte, CO

Distance(s): 100K, 50K

See Race Details

RMRR Spring Marathon Training Series #1

Distance(s): 50K

See Race Details

Runs With Scissors Races

Distance(s): 50K, Half Marathon, Marathon

See Race Details

Greenland Trail Races

Distance(s): 50K

See Race Details

Weld Your Mettle Running Festival

Distance(s): 100 Mile, 100K, 50 Mile, 50K, Marathon

See Race Details

Summits Trail Runs

Distance(s): 10K, 50K

See Race Details

The Hundo

Distance(s): 100K, 50K

See Race Details

KowTown Gravel

Distance(s): 100K, 50K

See Race Details

Freedom Tour Classic

Fort Collins, CO

Distance(s): 100K, 50K, 5K

See Race Details

Race in the Clouds – Alma Dirt Festival 2026

Distance(s): 10K, 50K, Half Marathon, Marathon

See Race Details

Silverheels Trail Runs

Distance(s): 100 Mile, 100K, 50K

See Race Details

Audi Power of Four Trail Run

Distance(s): 10K, 50K

See Race Details

Never Summer 100km & 60km

Distance(s): 100 Mile, 100K, 50K

See Race Details

Sheep Mountain Trail Runs

Distance(s): 50K

See Race Details

Continental Divide Trail Run

Steamboat Springs, CO

Distance(s): 50K

See Race Details

2026 Lake Nighthorse Triathlon – Sprint and Olympic

Distance(s): 50K

See Race Details

Buffalo Bicycle Classic

Distance(s): 100 Mile, 100K, 50 Mile, 50K

See Race Details

Salida Bike Fest – Salida 76 and the Banana Belt

Distance(s): 100K, 50K

See Race Details

Banana Belt MTB Race

Distance(s): 50K

See Race Details

Red Feather Trail Jamboree

Red Feather Lakes, CO

Distance(s): 100 Mile, 50 Mile, 50K, Half Marathon

See Race Details