USA Ultra Marathons in March

Upcoming races with ultra marathon distances in March across the USA. Use filters to quickly find races by state, city or race type.

More races: USA running calendar

Date RaceDistanceLocationhf:tax:statehf:tax:cityhf:tax:typerace
03/29/2025Blue Heron Hundreds100K, 100M, 26.2M, 40MMooresville ALalabamamooresville-altrail
03/29/2025Montaña de Oro Trail Run12K, 13.1M, 36K, 50KLos Osos CAcalifornialos-osos-catrail
03/29/2025Bootlegger 50K10K, 13.1M, 25K, 50K, 5KBoulder City NVnevadaboulder-city-nvtrail
03/29/2025Cappy’s Backyard Ultra NevadaPanaca NVnevadapanaca-nvtrail
03/29/2025Clinton Lake Ultra10M, 30MDe Witt ILillinoisde-witt-iltrail
03/30/2025The Long Run3H, 5M, 6HWind Gap PApennsylvaniawind-gap-patrail

Choose your favorite distance and save the calendar for later: Half Marathons, Marathons, Ultra Marathons, 5K, 10K, 50K, 50M, 100K, 100M

March Race Calendars:

All Races 5K Races
10K Races Half Marathons
Marathons Trail Races
50K Races 50 Miles Races
100K Races 100 Miles Races

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Reviewed by Runningstate