| 10456 | 17 May 26 | 2026 Kansas City Triathlon | triathlon | Kansas, MO |
| 10457 | 17 May 26 | 2026 Independence Triathlon | triathlon | Quakertown, PA |
| 10458 | 17 May 26 | 2026 Lake Lou Yaeger Triathlon | triathlon | Litchfield, IL |
| 10459 | 17 May 26 | cranky crab 2026 | 5K/10K | Seekonk, MA |
| 10460 | 17 May 26 | 2026 New England Season Opener Triathlon & Duathlon | triathlon | Hopkinton, MA |
| 10461 | 17 May 26 | 2026 Onion Man Triathlon | triathlon | Walla Walla, WA |
| 10462 | 18 May 26 | 2026 EPIC5 Challenge . . | triathlon | Kauai, HI |
| 10463 | 20 May 26 | Nitemoves 2026 | 5K | Santa Barbara, CA |
| 10464 | 20 May 26 | 2026 Nite Moves Summer Sunset Series - May 20 | triathlon | Santa Barbara, CA |
| 10465 | 22 May 26 | 2026 Lakeside Double Sprint Triathlon | triathlon | Greenville, SC |
| 10466 | 23 May 26 | 2026 Soldier Field 10 | 10K | Chicago, IL |
| 10467 | 23 May 26 | Muddy Dash | Austin | 5K | Austin, TX |
| 10468 | 23 May 26 | 2026 National Wine Day @ Three Fox 5k/1M | 1M/5K | Delaplane, VA |
| 10469 | 23 May 26 | 2026 Hamden Hills Half Marathon & Flat 5K | 5K | Hamden, CT |
| 10470 | 23 May 26 | Stillwater Half Marathon | ['Half Marathon'/ '10K'/ '5K'] | Stillwater, MN |