| 286 | 25 Oct 25 | 2025 Kids Cancer Foundation 5K Walk/Run in memory of Sebastian | 5K | Royal Palm Beach, FL |
| 287 | 28 Sep 25 | 2025 Kids Mission Bay Triathlon Prerace Clinic . . | triathlon | San Diego, CA |
| 288 | 21 Sep 25 | 2025 Kiel Raider Nation Triathlon | triathlon | Kiel, WI |
| 289 | 27 Sep 25 | 2025 Knights Fury Duathlon | triathlon | Honeoye Falls, NY |
| 290 | 28 Sep 25 | 2025 Knights Gambit 5k/1.5M | 1M/5K | Charlottesville, VA |
| 291 | 27 Sep 25 | 2025 Kokopelli Triathlon | triathlon | Hurricane, UT |
| 292 | 14 Dec 25 | 2025 Krampus Krawl at Maryland International Raceway 5k/10k | 10K/5K | Mechanicsville, MD |
| 293 | 04 Oct 25 | 2025 LA Tri Series Triathlon & Duathlon | triathlon | San Dimas, CA |
| 294 | 28 Nov 25 | 2025 Lake Anna Turkey Trot 5k/10k/Half | 10K/13.1/5K | Spotsylvania, VA |
| 295 | 19 Oct 25 | 2025 Lake Hodges Off-Road Duathlon | triathlon | San Diego, CA |
| 296 | 27 Nov 25 | 2025 Lansdowne Turkey Trot | 1k/5K | Leesburg, VA |
| 297 | 04 Oct 25 | 2025 Las Vegas Triathlon | triathlon | Boulder, NV |
| 298 | 05 Oct 25 | 2025 Last Chance Tri - Mattoon | triathlon | Mattoon, IL |
| 299 | 16 Nov 25 | 2025 Last Chance Triathlon | triathlon | St Petersburg, FL |
| 300 | 21 Sep 25 | 2025 Last Tri at Stony Creek | triathlon | Shelby Township, MI |