| 331 | 28 Sep 25 | 2025 Fall Classic Duathlon | triathlon | Lake Elmo, MN |
| 332 | 16 Aug 25 | 2025 Fall Creek Falls Half Iron, Olympic & Sprint Triathlon | triathlon | Spencer, TN |
| 333 | 05 Oct 25 | 2025 Fall Foliage 5k/10k | 10K/5K | College Park, MD |
| 334 | 15 Nov 25 | 2025 Fall Run for the Wounded 5k/10k/Half | 10K/13.1/5K | Triangle, VA |
| 335 | 11 Oct 25 | 2025 FALL Wicked Wine Run El Paso | 1K/5K | La Union, NM |
| 336 | 13 Jul 25 | 2025 Falmouth Sprint Triathlon | triathlon | Falmouth, MA |
| 337 | 24 Aug 25 | 2025 Fawn Lake Sprint Triathlon | triathlon | Spotsylvania Courthouse, VA |
| 338 | 27 Jul 25 | 2025 Findley Lake Triathlon Festival . . | triathlon | Findley Lake, NY |
| 339 | 07 Sep 25 | 2025 Finger Lakes Triathlon - Sunday | triathlon | Canandaigua, NY |
| 340 | 06 Sep 25 | 2025 Finger Lakes Youth Triathlon - Saturday . . | triathlon | Canandaigua, NY |
| 341 | 26 Jul 25 | 2025 First Responders - Bring in the Backup Triathlon | triathlon | Northwood, IA |
| 342 | 12 Jul 25 | 2025 Flatland Cup Junior Draft Legal Triathlon - SATURDAY EVENTS | triathlon | West Des Moines, IA |
| 343 | 13 Jul 25 | 2025 Flatland Cup Triathlon - Sunday | triathlon | West Des Moines, IA |
| 344 | 26 Jul 25 | 2025 Folsom Swim Run | triathlon | Folsom, CA |
| 345 | 13 Sep 25 | 2025 Fontana Triathlon | triathlon | Fontana, WI |