| 12-13 Apr 2025 |
Hogeye Marathon (5K|Marathon|Half Marathon|10K) |
Springdale, Arkansas, United States |
| 12 Apr 2025 |
South Downs Way 50 (50 Miles) |
Worthing, England, United Kingdom |
| 12 Apr 2025 |
Mad City Ultras (50k|100k) |
Madison, Wisconsin, United States |
| 12 Apr 2025 |
Oriflamme 50k (50km) |
Julian, California, United States |
| 18 Apr 2025 |
Double Top 100 Stone Anvil (100 Miler) |
Hasslers Mill, Georgia, United States |
| 19 Apr 2025 |
Dunes 100 (100 Miler) |
Hell Gate, Florida, United States |
| 19 Apr 2025 |
Hyner Trail Challenge (25K|50K) |
Hyner, Pennsylvania, United States |
| 19 Apr 2025 |
Rattler Trail Races (25K|10K) |
Colorado Springs, Colorado, United States |
| 19 Apr 2025 |
Zane Grey (100K) |
Pine, Arizona, United States |
| 21 Apr 2025 |
Boston Marathon (Marathon) |
Boston, Massachusetts, United States |
| 25-26 Apr 2025 |
The Canyons Endurance Runs (25K|50K|100K|100 Miles) |
Foresthill, California, United States |
| 27 Apr 2025 |
Eugene Marathon (Marathon) |
Eugene, Oregon, United States |
| 27 Apr 2025 |
Vancouver Sun Run (10 K) |
Vancouver, British Columbia, Canada |
| 02 May 2025 |
Kennet & Avon Canal (145 Miles) |
Bristol, England, United Kingdom |
| 02 May 2025 |
Salt Flats Endurance Runs (100 Miler|50 Miler) |
Wendover, Utah, United States |
| 03 May 2025 |
Thames Path 100 (100 Miles) |
London, England, United Kingdom |
| 03 May 2025 |
Hollywood to the Sea Road & Trail Relay (75 Miles) |
Los Angeles, California, United States |
| 04 May 2025 |
Flying Pig Marathon (Marathon|Half|10K) |
Cincinnati, Ohio, United States |