| 13246 | 23 May 26 | Muddy Dash | Austin | 5K | Austin, TX |
| 13247 | 23 May 26 | 2026 National Wine Day @ Three Fox 5k/1M | 1M/5K | Delaplane, VA |
| 13248 | 24 May 26 | Hibiscus Half Marathon, 15K and 5 Miler 2026 | 15K | Honolulu, HI |
| 13249 | 25 May 26 | BIGFOOT CHALLENGE 5k/8k Memorial Day Run/Walk | ['5K'] | Dansville, MI |
| 13250 | 29 May 26 | 2026 Essentia Health Fargo Marathon | 5K/13.1/26.2 | Fargo, ND |
| 13251 | 30 May 26 | Silver Moon Race: Paso Robles | 10K/Ultra | Paso Robles, CA |
| 13252 | 30 May 26 | Muddy Dash | Oklahoma City | 5K | Oklahoma, OK |
| 13253 | 30 May 26 | 2026 Diamond Kid Triathlon | triathlon | Blue Diamond, NV |
| 13254 | 30 May 26 | 2026 OnondagaMan Half Iron | triathlon | Jamesville, NY |
| 13255 | 30 May 26 | 2026 IronMan 70.3 Hawaii | triathlon | Kohala Coast, HI |
| 13256 | 30 May 26 | 2026 Wicked Wine Run Boise | 1K/5K | Caldwell, ID |
| 13257 | 30 May 26 | 2026 Wicked Wine Run Newport News, VA | 1K/5K | Williamsburg, VA |
| 13258 | 31 May 26 | North Shore Classic | 5K | Highland Park, IL |
| 13259 | 31 May 26 | The 2026 Women's Whisper Pool Tri | triathlon | East Meadow, NY |
| 13260 | 31 May 26 | 2026 Silver Serpent Multisport Festival - Sunday Events | triathlon | Silver Lake, NY |