| 28 Nov 2025 |
Arc of Attrition (100 Miles) |
Coverack, England, United Kingdom |
| 28 Nov 2025 |
Blood Rock (100 Miler) |
Pelham, Alabama, United States |
| 29 Nov 2025 |
Quad Dipsea (28.4 Miler) |
Mill Valley, California, United States |
| 5-6 Dec 2025 |
Island View Endurance Run (12 Kilometers|100 Miles Ultra|100 Kilometers|50 Kilometers|25 Kilometers) |
Gaviota, California, United States |
| 06 Dec 2025 |
Anza Borrego Cuyamaca 50 (ABC 50) (50 Miler) |
Harrison Park, California, United States |
| 06 Dec 2025 |
Over the Hill Track Club High Desert (30K|50K) |
Ridgecrest, California, United States |
| 06 Dec 2025 |
Holiday Hustle (13.1M|1M|5K) |
Dexter, Michigan, United States |
| 06 Dec 2025 |
McDowell Mountain Frenzy (50 Miler|50K) |
Fountain Hills, Arizona, United States |
| 06 Dec 2025 |
Hitchcock Experience (100 Miler) |
Honey Creek, Iowa, United States |
| 06 Dec 2025 |
Devil Dog Ultras (100-Mile) |
Belfair Crossroads, Virginia, United States |
| 06 Dec 2025 |
Wild in the Woods (5 Mile (10 Mile = 2 loops)|Course Monitors and Aid Station Locations) |
Defiance, Missouri, United States |
| 06 Dec 2025 |
Ray Miller 50/50 (50K|30K|50 Miler) |
Malibu, California, United States |
| 07 Dec 2025 |
California International Marathon (CIM) (Marathon) |
Sacramento, California, United States |
| 13 Dec 2025 |
Santa Monica Venice Christmas Run (5k|10k) |
Santa Monica, California, United States |
| 13 Dec 2025 |
Chino Hills Run Series Fall (30K|50K) |
Brea, California, United States |
| 13-20 Dec 2025 |
Modified Paramount Ranch Course for 2023 (10K|12 hour - how many 5k loops can you do in 12 hours? |1/2 Marathon|30K|50K) |
Agoura Hills, California, United States |
| 13 Dec 2025 |
Beast of the East 100 (Half-Marathon|100 Miler|100K|50 miler|Marathon) |
Gastonia, North Carolina, United States |
| 13-14 Dec 2025 |
Rocket City Marathon Race Weekend (Front Half-Marathon|Back Half-Marathon|5K|10K|Marathon) |
Huntsville, Alabama, United States |
| 14 Dec 2025 |
Honolulu Marathon (Marathon) |
Honolulu, Hawaii, United States |
| 14 Dec 2025 |
Tucson Marathon (Marathon|Half|50K) |
Tucson, Arizona, United States |