Upcoming races with 100M distance in August 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 08/02/2025 Badger Trail Races 100K, 100M, 13.1M, 26.2M, 50K, 50M Belleville WI wisconsin belleville-wi trail 08/08/2025 Wyoming Range 100-Mile Endurance Run 100M Hoback WY wyoming hoback-wy trail 08/15/2025 Bryre-Baby Dragon 100K, 100M, 40K, 40M Blairsville GA georgia blairsville-ga trail 08/15/2025 Jigger Johnson Trail Races 100M, 20M, 50M Waterville Valley NH new-hampshire waterville-valley-nh trail 08/15/2025 Lean Horse 100 100M, 20M, 30M, 50M Custer SD south-dakota custer-sd trail 08/16/2025 CKF Leadville Trail 100 Run 100M Aspen CO colorado aspen-co trail 08/15/2025 Jigger Johnson Ultras 100M, 20M, 50M Waterville Valley NH new-hampshire waterville-valley-nh trail 08/30/2025 Wildcat Ultras 100K, 100M, 15M, 50K, 50M Pensacola FL florida pensacola-fl trail 08/30/2025 Booneville Backroads Ultra 100K, 100M, 10K, 50K Booneville IA iowa booneville-ia trail
Choose your favorite distance and save the calendar for later: Half Marathons, Marathons, Ultra Marathons, 5K, 10K, 50K, 50M, 100K, 100M
August Race Calendars:
| 5K Races | 10K Races |
| Half Marathons | Marathons |
| Ultra Marathons | Trail Races |
| 50K Races | 50 Miles Races |
| 100K Races | All Races |
