| 01 Jan 2023 |
Resolution Run 5k (5k) |
Missoula, Montana, United States |
| 07 Jan 2023 |
Avalon 50k/50m (50K|50 Miler) |
Avalon, California, United States |
| 07 Jan 2023 |
Griffith Park Resolution Run (5K|12K|Half Marathon) |
Los Angeles, California, United States |
| 7-28 Jan 2023 |
Sean O'Brien 50k/26.2/30k (20K|Marathon|30K|50K) |
Malibu, California, United States |
| 08 Jan 2023 |
Koumaria Marathon (38km) |
Patras, West Greece, Greece |
| 11 Jan 2023 |
Hootenanny 50k (50k & Relay) |
Lolo, Montana, United States |
| 14 Jan 2023 |
HURT 100 (HURT 100) |
Honolulu, Hawaii, United States |
| 14 Jan 2023 |
Frozen H3 (100 Miler) |
Charleston, South Carolina, United States |
| 14 Jan 2023 |
Long Haul 100 (100 Miler) |
Ehren, Florida, United States |
| 14 Jan 2023 |
Coldwater Rumble (52K|100 Miler) |
Goodyear, Arizona, United States |
| 15 Jan 2023 |
Carlsbad Full & Half Marathon (Half Marathon) |
Carlsbad, California, United States |
| 22 Jan 2023 |
Calico Trail Run (50K) |
San Bernardino County, California, United States |
| 27 Jan 2023 |
Arc of Attrition (100 Miles) |
Coverack, England, United Kingdom |
| 28 Jan 2023 |
AZT Oracle Rumble (1/2 Marathon|50K) |
Oracle, Arizona, United States |
| 28 Jan 2023 |
Sean O'Brien 100K/50M (100K|50 Miler) |
Calabasas, California, United States |
| 28 Jan 2023 |
Orcas Island 50k (50K) |
Orcas Island, Washington, United States |
| 28 Jan 2023 |
La Cuesta Ranch Trail Run (50K|25K) |
San Luis Obispo, California, United States |
| 28 Jan 2023 |
Ordnance 100K (100 KM) |
Salinas, California, United States |
| 28 Jan 2023 |
Beast of Burden (Winter) (100 Miler) |
Lockport, New York, United States |
| 30 Jan 2023 |
Arrowhead 135 (135M Veteran) |
International Falls, Minnesota, United States |