| 26 Mar 2021 |
Dublin to Belfast (173 km) |
Dublin, Leinster, Ireland |
| 26 Mar 2021 |
Antelope Island Buffalo Run (100 Miler) |
Syracuse, Utah, United States |
| 26 Mar 2021 |
Greenbrier Ultras (100 Mile Endurance Run) |
Greenbrier, Maryland, United States |
| 26 Mar 2021 |
Badger Mountain Challenge (100 Miler|50 Miler) |
Richland, Washington, United States |
| 27 Mar 2021 |
Blackbeard's Revenge (100 Miler) |
Corrolla, North Carolina, United States |
| 27 Mar 2021 |
Georgia's Death Race (68 miler) |
Blairsville, Georgia, United States |
| 27 Mar 2021 |
Crown King Scramble (50K) |
Phoenix, Arizona, United States |
| 27 Mar 2021 |
VALENCIA Trail Race (10K|Half Marathon|50K) |
Valencia, California, United States |
| 27 Mar 2021 |
Prairie Spirit Trail (100 Miler) |
Ottawa, Kansas, United States |
| 27 Mar 2021 |
Behind the Rocks (30K|50 Miler|50K) |
Moab, Utah, United States |
| 27 Mar 2021 |
NJ Ultra Festival (100 Miles) |
Hardwick Center, New Jersey, United States |
| 27 Mar 2021 |
Run Sunset Beach (5K|Half Marathon) |
Sunset Beach, North Carolina, United States |
| 27 Mar 2021 |
GORTEX Grand Traverse (Grand Traverse) |
Crested Butte, Colorado, United States |
| 27 Mar 2021 |
Umstead 100 (100 Miles) |
Raleigh, North Carolina, United States |
| 01 Apr 2021 |
St. George Marathon (Marathon) |
St. George, Utah, United States |
| 03 Apr 2021 |
Brazos Bend (50 Miler|25K|50K) |
Needville, Texas, United States |
| 03 Apr 2021 |
Ramblas Run (1/2 Marathon) |
San Juan Capistrano, California, United States |
| 03 Apr 2021 |
Singletrack Stampede (42K|22K) |
Calabasas, California, United States |
| 08 Apr 2021 |
Beyond Limits Ultra (100 Miler) |
Henderson, Nevada, United States |
| 09 Apr 2021 |
Zumbro Endurance Run (100 Miler) |
Theilman, Minnesota, United States |