| 12271 | 07 Sep 26 | 2026 Labor Day Burke 5k/10k | 10K/5K | Fairfax Station, VA |
| 12272 | 15 Feb 26 | 2026 Kiss My Asphalt 5k/10k/1M | 10K/1M/5K | Fredericksburg, VA |
| 12273 | 05 Apr 26 | 2026 King Street Cats Easter 5k/12k | 12K/5K | Fairfax Station, VA |
| 12274 | 09 May 26 | 2026 Kinetic Triathlon Fest Half & Olympic - Saturday | triathlon | Spotsylvania, VA |
| 12275 | 08 Aug 26 | 2026 Kill Creek Park Triathlon & Duathlon | triathlon | Olathe, KS |
| 12276 | 07 Jun 26 | 2026 Keuka Lake Triathlon | triathlon | Keuka Park, NY |
| 12277 | 16 May 26 | 2026 Kettle Krush 5K | 1K/5K | Marietta, GA |
| 12278 | 17 May 26 | 2026 Kansas City Triathlon | triathlon | Kansas, MO |
| 12279 | 22 Aug 26 | 2026 Kalero 5k | 5K | Purcellville, VA |
| 12280 | 03 May 26 | 2026 Just Tryan It Kids Triathlon | triathlon | Chapel Hill, NC |
| 12281 | 10 May 26 | 2026 Jerseyman Triathlon | triathlon | Lebanon, NJ |
| 12282 | 09 Aug 26 | 2026 JCPRD Kids Triathlon | triathlon | Olathe, KS |
| 12283 | 07 Jun 26 | 2026 Jamestown Triathlon | triathlon | Williamsburg, VA |
| 12284 | 12 Jul 26 | 2026 Jamesport Triathlon | triathlon | Riverhead, NY |
| 12285 | 03 May 26 | 2026 J-Hawk Earlybird Triathlon | triathlon | Whitewater, WI |