| 02 May 2020 |
Miwok 100k (100k) |
Stinson Beach, California, United States |
| 2-3 May 2020 |
Dragon Coastal Races (100 Miles|50 Miles) |
Kenfig, Wales, United Kingdom |
| 02 May 2020 |
Lost Lake (25K|50K) |
Bellingham, Washington, United States |
| 03 May 2020 |
Verdugo Mountains 10k (10k) |
Glendale, California, United States |
| 03 May 2020 |
BMO Vancouver Marathon (Half Marathon|Marathon) |
Vancouver, British Columbia, Canada |
| 03 May 2020 |
Volkswagen Prague Marathon (Marathon) |
Prague, PR, Czechia |
| 8-9 May 2020 |
Thunderbunny Trail Races (50K|12K|25K+) |
Athens, Ohio, United States |
| 09 May 2020 |
Ice Age Trail Endurance Runs (Half Marathon|50k|50 Miler) |
La Grange, Wisconsin, United States |
| 09 May 2020 |
Yosemite Half Marathon (Half Marathon) |
Yosemite National Park, California, United States |
| 09 May 2020 |
Peak Bloodroot Ultra (50 Miles) |
Pittsfield, Vermont, United States |
| 09 May 2020 |
Whoo's in El Moro (25K|50K) |
Newport Beach, California, United States |
| 09 May 2020 |
Riverlands 100 (100 Miler) |
Auburn Plains, Maine, United States |
| 09 May 2020 |
Quad Rock 50 (25 Miler|50 Miler) |
Fort Collins, Colorado, United States |
| 09 May 2020 |
Quicksilver (100K|50K) |
San Jose, California, United States |
| 15 May 2020 |
Devon Coast to Coast (117 Miles) |
South Hams, England, United Kingdom |
| 15 May 2020 |
Cruel Jewel 100 (100 Miler) |
Blairesville, Georgia, United States |
| 15 May 2020 |
Rebellion Summer (135 Miles|75 Miles) |
Knighton, Wales, United Kingdom |
| 16 May 2020 |
Born to Run (100 Miler) |
Santa Ynez, California, United States |
| 16 May 2020 |
Sun Mountain (50K) |
Winthrop, Washington, United States |
| 16 May 2020 |
Ultra-Trail Austrailia (100k|50k) |
Katoomba, New South Wales, Australia |