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.

upcoming races

Colossal Vail 50/50

Dec 6, 2025

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McDowell Mountain Frenzy Trail Runs

Dec 6, 2025

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BMW Dallas Marathon Festival

Dec 12, 2025

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Frozen Trail Runfest

Dec 13, 2025

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Tucson Marathon

Dec 14, 2025

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SD50 / Trail Marathon / Half Marathon

Jan 10, 2026

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Perpetua Fatass 2026

Jan 10, 2026

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Jan 31, 2026

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Elephant Mountain Trail Runs

Feb 7, 2026

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Hagg Mud 50K/25K

Feb 14, 2026

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Black Canyon Ultras

Feb 14, 2026

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Feb 14, 2026

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Lord Hill Trail Run

Feb 21, 2026

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Montara Mountain Trail Run

Feb 21, 2026

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Redtail Ridge 10K, Half, 30K, 50K

Feb 21, 2026

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Feb 28, 2026

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Sycamore Canyon Trail Races

Feb 28, 2026

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Mar 7, 2026

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Antelope Canyon Ultra Marathons

Mar 7, 2026

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Red Mountain 50K

Mar 7, 2026

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Chanoko 50K, 31K and 5-Mile Trail Runs

Mar 7, 2026

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Bidwell Classic

Mar 7, 2026

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Old West 50k, Marathon, Half Marathon

Mar 14, 2026

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Marin Ultra Challenge

Mar 14, 2026

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Mar 20, 2026

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VALENCIA Trail Race

Mar 21, 2026

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Mar 21, 2026

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Redwood (Spring) Trail Run

Mar 21, 2026

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Crown King Scramble

Mar 28, 2026

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Antelope Island Buffalo Run

Mar 28, 2026

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Behind the Rocks Ultra

Mar 28, 2026

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Save Mount Diablo Trails Challenge

Apr 4, 2026

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Desert Rats Trail Running Festival

Apr 9, 2026

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Gorge Waterfalls

Apr 10, 2026

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Ancient Lakes 50M/50K/25K/10K

Apr 11, 2026

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