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50K
50 Mile
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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.
5K
10K
Half Marathon
Marathon
Ultramarathon
50K
100K
Relay
50 Mile
100 Mile
15K
25K
20 Mile
1 Mile
Kids
Sprint
Olympic
Half Ironman
Ironman

upcoming races

Defiance 50K, 30K & 15K
Oct 11, 2025
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Tacoma
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Rogue Gorge
Oct 18, 2025
/
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Silver Falls Trail Runs
Oct 31, 2025
/
Salem
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Run The Rock
Nov 8, 2025
/
Terrebonne
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Grand Ridge Trail Run
Nov 8, 2025
/
Seattle
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Dead Horse Ultra
Nov 15, 2025
/
Moab
View →