| 15601 | 17 May 26 | 2026 Cal Tri Richmond | triathlon | Spotsylvania Courthouse, VA |
| 15602 | 17 May 26 | 2026 Women's Gold Nugget Triathlon | triathlon | Anchorage, AK |
| 15603 | 18 May 26 | 2026 EPIC5 Challenge . . | triathlon | Kauai, HI |
| 15604 | 20 May 26 | Nitemoves 2026 | 5K | Santa Barbara, CA |
| 15605 | 23 May 26 | 2026 Soldier Field 10 | 10K | Chicago, IL |
| 15606 | 23 May 26 | Muddy Dash | Austin | 5K | Austin, TX |
| 15607 | 23 May 26 | 2026 National Wine Day @ Three Fox 5k/1M | 1M/5K | Delaplane, VA |
| 15608 | 24 May 26 | Hibiscus Half Marathon, 15K and 5 Miler 2026 | 15K | Honolulu, HI |
| 15609 | 25 May 26 | Houston Holiday Series - Memorial Day Run, Half Marathon, 5K, 10K, Family and Kids' K | 5K | Houston, TX |
| 15610 | 25 May 26 | BIGFOOT CHALLENGE 5k/8k Memorial Day Run/Walk | ['5K'] | Dansville, MI |
| 15611 | 29 May 26 | 2026 Essentia Health Fargo Marathon | 5K/13.1/26.2 | Fargo, ND |
| 15612 | 30 May 26 | Silver Moon Race: Paso Robles | 10K/Ultra | Paso Robles, CA |
| 15613 | 30 May 26 | Summer Dash Series - Lemonade Dash Austin, 5K, 10K, Family and Kids' K | 5K | Round Rock, TX |
| 15614 | 30 May 26 | Muddy Dash | Oklahoma City | 5K | Oklahoma, OK |
| 15615 | 30 May 26 | 2026 Diamond Kid Triathlon | triathlon | Blue Diamond, NV |