| 08 May 2026 |
San Diego 100 (100 Miler) |
Lake Cuyamaca, California, United States |
| 09 May 2026 |
Yosemite Half Marathon (Half Marathon) |
Yosemite National Park, California, United States |
| 15 May 2026 |
Born to Run (100M) |
Santa Ynez, California, United States |
| 15 May 2026 |
UTAH 115 (115 Miles) |
Kanab, Utah, United States |
| 15 May 2026 |
Cruel Jewel 100 (100 Miler) |
Blairesville, Georgia, United States |
| 15 May 2026 |
UTAH 50 (UTAH 50) |
Kanab, Utah, United States |
| 15 May 2026 |
Infinitus (100 Miler) |
Goshen, Vermont, United States |
| 16 May 2026 |
Ram Party (24K |50 Mile|50K|16K|33K|5K) |
Colorado Springs, Colorado, United States |
| 16 May 2026 |
Bishop High Sierra Ultras (50 Miler|55K|100K) |
Bishop, California, United States |
| 16 May 2026 |
North Downs Way 50 (50 Miles) |
Waverley, England, United Kingdom |
| 16 May 2026 |
O'Neill Park Trail Races (30k|Half Marathon|10k|50k|Marathon) |
Trabuco Canyon, California, United States |
| 16 May 2026 |
Sun Mountain (50K) |
Winthrop, Washington, United States |
| 17 May 2026 |
NJ Ultra Festival (100 Miles) |
Hardwick Center, New Jersey, United States |
| 23 May 2026 |
Grand Union Canal (145 Miles) |
Birmingham, England, United Kingdom |
| 23 May 2026 |
Nanny Goat 100 (100 Miler) |
Riverside, California, United States |
| 24 May 2026 |
Calgary Marathon (Half Marathon|Kid's Run|5K|10K|50K|Marathon) |
Calgary, Alberta, Canada |
| 30 May 2026 |
Worlds End Ultramarathon (50k|100k) |
Forksville, Pennsylvania, United States |
| 30 May 2026 |
Smith Rock Classic (10 Mile|50K|50 Mile) |
Jefferson County, Oregon, United States |
| 30 May 2026 |
Worlds End Ultramarathon 100K - 2025 (100K) |
Forksville, Pennsylvania, United States |
| 30 May 2026 |
Xterra Crystal Cove Trail Run (15k|6k) |
Newport Beach, California, United States |