| 361 | | 06 Jul 24 | 2024 Hagerstown Youth Triathlon - SATURDAY . . | triathlon | Hagerstown, MD |
| 362 | | 13 Jul 24 | 2024 Hagg Lake Triathlon & Trail Festival . . | triathlon | Gaston, OR |
| 363 | | 15 Jun 24 | 2024 Haleiwa Triathlon ??? | triathlon | Haleiwa, HI |
| 364 | | 27 Oct 24 | 2024 Halloween Horror 5k & 10k | 10K/5K | Gainesville, VA |
| 365 | | 25 May 24 | 2024 Hamden Hills Half Marathon & Flat 5K | 5K | Hamden, CT |
| 366 | | 25 Aug 24 | 2024 Hammerhead Olympic & Sprint Triathlon | triathlon | Starke, FL |
| 367 | | 13 Jul 24 | 2024 Hammerman Off-Road Triathlon & Duathlon ?? . . | triathlon | Anchorage, AK |
| 368 | | 13 Jul 24 | 2024 Hamptons Youth Triathlon ?? . . | triathlon | Sag Harbor, NY |
| 369 | | 20 Jul 24 | 2024 Handcart Days Races | 1K/5K | Bountiful, UT |
| 370 | | 06 Jul 24 | 2024 Hannibal Cannibal | 5K/10K/15K | Hannibal, MO |
| 371 | | 01 Jun 24 | 2024 Happy Tail Wine Trail 5k | 1M/5K | Louisa, VA |
| 372 | | 12 Oct 24 | 2024 Harvest Hustle 5K | 1K/5K | Lindale, TX |
| 373 | | 24 Nov 24 | 2024 Harvest Hustle 5k & 10k | 10K/5K | White Plains, MD |
| 374 | | 07 Sep 24 | 2024 Harvest Moon Long Course Triathlon ?? . . | triathlon | Boulder, CO |
| 375 | | 09 Jun 24 | 2024 Harvest Triathlon . . | triathlon | Wareham, MA |
