| 331 | 07 Jun 26 | 2026 Jamestown Triathlon | triathlon | Williamsburg, VA |
| 332 | 09 Aug 26 | 2026 JCPRD Kids Triathlon | triathlon | Olathe, KS |
| 333 | 10 May 26 | 2026 Jerseyman Triathlon | triathlon | Lebanon, NJ |
| 334 | 19 Jun 26 | 2026 Juneteenth Menare Foundation 6k & 12k | 12K/6K | Germantown, MD |
| 335 | 03 May 26 | 2026 Just Tryan It Kids Triathlon | triathlon | Chapel Hill, NC |
| 336 | 22 Aug 26 | 2026 Kalero 5k | 5K | Purcellville, VA |
| 337 | 17 May 26 | 2026 Kansas City Triathlon | triathlon | Kansas, MO |
| 338 | 16 May 26 | 2026 Kettle Krush 5K | 1K/5K | Marietta, GA |
| 339 | 07 Jun 26 | 2026 Keuka Lake Triathlon | triathlon | Keuka Park, NY |
| 340 | 08 Aug 26 | 2026 Kill Creek Park Triathlon & Duathlon | triathlon | Olathe, KS |
| 341 | 09 May 26 | 2026 Kinetic Triathlon Fest Half & Olympic - Saturday | triathlon | Spotsylvania, VA |
| 342 | 05 Apr 26 | 2026 King Street Cats Easter 5k/12k | 12K/5K | Fairfax Station, VA |
| 343 | 13 Dec 26 | 2026 Krampus Krawl at Maryland International Raceway 5k/10k | 10K/5K | Mechanicsville, MD |
| 344 | 07 Sep 26 | 2026 Labor Day 5k/10k | 10K/5K | laurel, MD |
| 345 | 07 Sep 26 | 2026 Labor Day Burke 5k/10k | 10K/5K | Fairfax Station, VA |