| 22 Apr 2023 |
Zane Grey (100K) |
Pine, Arizona, United States |
| 22 Apr 2023 |
Dunes 100 (100 Miler) |
Hell Gate, Florida, United States |
| 23 Apr 2023 |
Big Sur International Marathon (Marathon) |
Big Sur, California, United States |
| 26 Apr 2023 |
Thames Ring 250 (250 Miles) |
Streatley, England, United Kingdom |
| 28 Apr 2023 |
The Canyons Endurance Runs (100K|100 Miles|25K|50K) |
Foresthill, California, United States |
| 29 Apr 2023 |
C&O Canal 100 (100 Miles) |
Water Acres, Maryland, United States |
| 29 Apr 2023 |
Grit OCR (Claw - 8-Miles|Fang - 5-Miles) |
Santa Clarita, California, United States |
| 30 Apr 2023 |
Reno Connector Run (10K) |
Reno, Nevada, United States |
| 30 Apr 2023 |
Eugene Marathon (Marathon) |
Eugene, Oregon, United States |
| 01 May 2023 |
Cocodona 250 (250 Miler) |
Rock Springs, Arizona, United States |
| 03 May 2023 |
Snowbowl 15k (15k) |
Missoula, Montana, United States |
| 03 May 2023 |
Sentinel Hill Climb (1.6 Miles, 1,900 feet of climbing) |
Missoula, Montana, United States |
| 05 May 2023 |
Salt Flats Endurance Runs (100 Miler|50 Miler) |
Wendover, Utah, United States |
| 05 May 2023 |
Tillamook Burn Trail Run (50K) |
Tillamook State Forest, Oregon, United States |
| 06 May 2023 |
Thames Path 100 (100 Miles) |
London, England, United Kingdom |
| 06 May 2023 |
Riverlands 100 (100 Miler) |
Auburn Plains, Maine, United States |
| 06 May 2023 |
McDonald Forest 50k (50K) |
Benton County, Oregon, United States |
| 06 May 2023 |
Miwok 100k (100k) |
Stinson Beach, California, United States |
| 06 May 2023 |
Breakneck Point Trail Runs (21K|42K) |
Beacon, New York, United States |
| 06 May 2023 |
Pen Llyn Ultra (50 Miles|75 Miles|100 Miles) |
Y Ffor, Wales, United Kingdom |