| 23 Apr 2021 |
Jackpot Ultra Running Festival (100 Mile USATF) |
Henderson, Nevada, United States |
| 24 Apr 2021 |
Born to Run (100M) |
Santa Ynez, California, United States |
| 24 Apr 2021 |
Zane Grey (100K) |
Pine, Arizona, United States |
| 24 Apr 2021 |
The Canyons Endurance Runs (50k|100K) |
Foresthill, California, United States |
| 24 Apr 2021 |
C&O Canal 100 (100 Miles) |
Water Acres, Maryland, United States |
| 25 Apr 2021 |
Big Sur International Marathon (Marathon) |
Big Sur, California, United States |
| 25 Apr 2021 |
Eugene Marathon (Marathon) |
Eugene, Oregon, United States |
| 28 Apr 2021 |
Sentinel Hill Climb (1.6 Miles, 1,900 feet of climbing) |
Missoula, Montana, United States |
| 30 Apr 2021 |
Salt Flats Endurance Runs (50 Miler|100 Miler) |
Wendover, Utah, United States |
| 01 May 2021 |
Sycamore Canyon (50 K|100 K) |
Poway, California, United States |
| 01 May 2021 |
Phantom Trail Races (10 Miler) |
Cornell, California, United States |
| 01 May 2021 |
Lost Lake (50K|25K) |
Bellingham, Washington, United States |
| 01 May 2021 |
Xterra Topanga Turkey Trot (10k|15k|5k) |
Topanga, California, United States |
| 01 May 2021 |
Xterra Boney Mountain (21k|6k) |
Newbury Park, California, United States |
| 01 May 2021 |
Xterra Crystal Cove Trail Run (6k|15k) |
Newport Beach, California, United States |
| 01 May 2021 |
Collegiate Peaks Trail Run (25 Miler|50 Miler) |
Buena Vista, Colorado, United States |
| 02 May 2021 |
BMO Vancouver Marathon (Marathon|Half Marathon) |
Vancouver, British Columbia, Canada |
| 02 May 2021 |
Verdugo Mountains 10k (10k) |
Glendale, California, United States |
| 02 May 2021 |
Tillamook Burn Trail Run (50K) |
Tillamook State Forest, Oregon, United States |
| 02 May 2021 |
Volkswagen Prague Marathon (Marathon) |
Prague, PR, Czechia |