| 11-12 Oct 2025 |
Midstate Massive Ultra Trail (30 Miler|100 Miler|50 Miler) |
New Ipswich, New Hampshire, United States |
| 11 Oct 2025 |
Canal Corridor 100 (100 Miler) |
Akron, Ohio, United States |
| 11 Oct 2025 |
Angel's Rest (10K|20 Mile|50K) |
Multnomah County, Oregon, United States |
| 12 Oct 2025 |
Chicago Marathon (Marathon) |
Chicago, Illinois, United States |
| 12 Oct 2025 |
Steamtown Marathon (26.2 Miles) |
Forest City, Pennsylvania, United States |
| 12 Oct 2025 |
Paine to Pain (Half Marathon) |
Westchester County, New York, United States |
| 12 Oct 2025 |
Nantucket Half Marathon (Nantucket Half Marathon) |
Nantucket, Massachusetts, United States |
| 12 Oct 2025 |
Toronto Waterfront Marathon (5K|Half Marathon|Marathon) |
Old Toronto, Ontario, Canada |
| 17 Oct 2025 |
Pony Express Trail Run (50 Miler|100 Miler) |
West Of Faust, Utah, United States |
| 17 Oct 2025 |
Mines of Spain 100 (100K|100 Miler) |
Dubuque, Iowa, United States |
| 18 Oct 2025 |
Pumpkin Holler Hunnerd (100K) |
Ellerville, Oklahoma, United States |
| 18 Oct 2025 |
Uwharrie 100 (100 Miler) |
Lake In The Pine, North Carolina, United States |
| 18 Oct 2025 |
Deerfly Trail Race (11k|6k) |
Fayetteville, North Carolina, United States |
| 18 Oct 2025 |
Kiwi Walk and Run Rotorua (Long|Mid|Short) |
Rotorua, Bay of Plenty, New Zealand |
| 18 Oct 2025 |
SPACEROCK Trail Race (15K|5K|10K|Half Marathon) |
Agua Dulce, California, United States |
| 18 Oct 2025 |
Lake Sonoma 100K and 55k (55K|100K) |
Sonoma County, California, United States |
| 18 Oct 2025 |
Quest for the Crest Trail Races (50K) |
Burnsville, North Carolina, United States |
| 18 Oct 2025 |
Autumn 100 (100 Miles) |
Streatley, England, United Kingdom |
| 18 Oct 2025 |
Savage 100 (100 Miles|100k) |
Savage, Minnesota, United States |
| 19 Oct 2025 |
Leatherman's Loop (10k) |
Ward Pound Ridge Reservation, New York, United States |