| 10 Apr 2021 |
Winter Warrior Finland (Warrior Squad / Race Squad|Challenge) |
Ylläs, LL, Finland |
| 10 Apr 2021 |
Oriflamme 50k (50km) |
Julian, California, United States |
| 10 Apr 2021 |
Potowatomi (50 Miler) |
Pekin, Illinois, United States |
| 10-11 Apr 2021 |
FOURmidable (50K|35.5K) |
Auburn, California, United States |
| 10 Apr 2021 |
The PSC Race (PARK COMPLEX 21 k|PARK COMPLEX 10k|PARK COMPLEX 5k) |
Elarduspark, Pretoria, GT, South Africa |
| 10 Apr 2021 |
Arts Run (10K|5K|Kids Dash) |
Santa Clarita, California, United States |
| 10-11 Apr 2021 |
Lake Sonoma 50 (50 Miler|100k) |
Healdsburg, California, United States |
| 10 Apr 2021 |
Rattler Trail Races (25K|10K) |
Colorado Springs, Colorado, United States |
| 10-17 Apr 2021 |
Whiskey Basin Trail Runs (31k|88K|57k) |
Prescott, Arizona, United States |
| 10 Apr 2021 |
South Downs Way 50 (50 Miles) |
Worthing, England, United Kingdom |
| 10 Apr 2021 |
Zion Ultras (50 K|Half Marathon|100 Mile|100 K) |
Virgin, Utah, United States |
| 11 Apr 2021 |
Peterson Ridge Rumble (20 Miler|40 Miler) |
Sisters, Oregon, United States |
| 11 Apr 2021 |
Reno Connector Run (10K) |
Reno, Nevada, United States |
| 16 Apr 2021 |
Double Top 100 Stone Anvil (100 Miler) |
Hasslers Mill, Georgia, United States |
| 17 Apr 2021 |
Northern Traverse (190 Miles) |
Copeland, England, United Kingdom |
| 17 Apr 2021 |
Mad City Ultras (100k|50k) |
Madison, Wisconsin, United States |
| 18 Apr 2021 |
Farmdale 100 (100 Miler) |
East Peoria, Illinois, United States |
| 18 Apr 2021 |
Bend Marathon (Marathon) |
Bend, Oregon, United States |
| 18 Apr 2021 |
Vancouver Sun Run (10 K) |
Vancouver, British Columbia, Canada |
| 23 Apr 2021 |
Jackpot Ultra Running Festival (100 Mile USATF) |
Henderson, Nevada, United States |