| 10426 | 11 May 26 | 2026 Prairie Series - Day 4 (NE) | 5K/10K | South Sioux, NE |
| 10427 | 11 May 26 | Prairie Series Day 4 - NE | 5K/10K/13.1M/26.2M | South Sioux, NE |
| 10428 | 11 May 26 | 3 Days at the Fair | 26.2M/50K | Augusta, NJ |
| 10429 | 12 May 26 | 2026 Prairie Series - Day 5 (IA) | 5K/10K | Sioux, IA |
| 10430 | 12 May 26 | Prairie Series Day 5 - IA | 5K/10K/13.1M/26.2M | Sioux, IA |
| 10431 | 13 May 26 | 2026 Prairie Series - Day 6 (SD) | 5K/10K | Baltic, SD |
| 10432 | 13 May 26 | USA Triathlon Multisport National Championships Festival | Relay/Swim/Triathlon | South Haven, MI |
| 10433 | 14 May 26 | 2026 Prairie Series - Day 7 (MN/ND) | 5K/10K | Breckenridge, MN |
| 10434 | 14 May 26 | 2026 XTERRA North American Championship | 5K | Pelham, AL |
| 10435 | 15 May 26 | 2026 Prairie Series - Day 8 (MN/ND) | 5K/10K | Breckenridge, MN |
| 10436 | 16 May 26 | La Jolla Half Marathon & 5K | ['Half Marathon'/ '5K'] | San Diego, CA |
| 10437 | 16 May 26 | The SPRING SPRUNG 5k-10k and Half Marathon | 5K/10K/13.1 | St Louis, MO |
| 10438 | 16 May 26 | Muddy Dash | DFW | 5K | Fort Worth, TX |
| 10439 | 16 May 26 | 2026 Two Twisted Posts Winery 5k/10k | 10K/5K | Purcellville, VA |
| 10440 | 16 May 26 | 2026 XTERRA Oak Mountain - North American Championship | triathlon | Pelham, AL |