Upcoming races with 100K distance in April across the USA. Use filters to quickly find races by state, city or race type.
More races:ย USA running calendar
Date Race Distance Location hf:tax:state hf:tax:city hf:tax:typerace 04/11/2025 Gorge Waterfalls Trail 100K, 30K, 50K Cascade Locks OR oregon cascade-locks-or trail 04/11/2025 Zion Ultras & Trail Half Marathon 100K, 100M, 13.1M, 50K Apple Valley UT utah apple-valley-ut trail 04/11/2025 Desert RATS Trail Running Festival 100K, 10K, 13.1M, 50K Fruita CO colorado fruita-co trail 04/12/2025 Lake McMurtry Run 100K, 12K, 25K, 50K, 5K Stillwater OK oklahoma stillwater-ok trail 04/12/2025 Leona Divide Trail Runs 100K, 100M, 30K, 50M, 55K Lake Hughes CA california lake-hughes-ca trail 04/26/2025 Wawayanda Trail Fest 100K, 13.1M, 50K, 50M Hewitt NJ new-jersey hewitt-nj trail 04/27/2025 Jack Bristol Lake Waramaug Ultra Races 100K, 50K, 50M New Preston CT connecticut new-preston-ct trail
Choose your favorite distance and save the calendar for later: Half Marathons, Marathons, Ultra Marathons, 5K, 10K, 50K, 50M, 100K, 100M
April Race Calendars:
| 5K Races | 10K Races |
| Half Marathons | Marathons |
| Ultra Marathons | Trail Races |
| 50K Races | 50 Miles Races |
| 100 Miles Races | All Races |
