| 601 | 31 Oct 25 | 2025 Monster Mash 1M, 5K, 10K, 13.1, 26.2 | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Seattle, WA |
| 602 | 31 Oct 25 | 2025 Monster Mash 1M, 5K, 10K, 13.1, 26.2 | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Morgantown, WV |
| 603 | 31 Oct 25 | 2025 Monster Mash 1M, 5K, 10K, 13.1, 26.2 | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Oshkosh, WI |
| 604 | 31 Oct 25 | 2025 Monster Mash 1M, 5K, 10K, 13.1, 26.2 | 10K/13.1/1M/26.2/5K/Triathlon/Ultra | Casper, WY |
| 605 | 12 Oct 25 | 2025 Monster Triathlon Keller | triathlon | Keller, TX |
| 606 | 20 Jul 25 | 2025 Montana Women's Triathlon . . | triathlon | Helena, MT |
| 607 | 20 Jul 25 | 2025 Montauk Lighthouse Triathlon . . | triathlon | Montauk, NY |
| 608 | 25 Jul 25 | 2025 Moonlit Mile 5K... | triathlon | Richmond, KY |
| 609 | 09 Aug 25 | 2025 Moose Lake Triathlon | triathlon | Moose Lake, MN |
| 610 | 27 Jul 25 | 2025 Moose Nugget Triathlons | triathlon | Anchorage, AK |
| 611 | 07 Sep 25 | 2025 Mount Vernon Park 5k/10k | 10K/5K | Alexandria, VA |
| 612 | 26 Jul 25 | 2025 Mountain Lakes Triathlon | triathlon | Guntersville, AL |
| 613 | 26 Oct 25 | 2025 Mountain Man Biathlon | triathlon | Morristown, NJ |
| 614 | 17 Aug 25 | 2025 Mountain Man Olympic & Half Iron Tri | triathlon | Flagstaff, AZ |
| 615 | 28 Sep 25 | 2025 Muncie Sprint and Olympic #2 - Last Chance Triathlon | triathlon | Selma, IN |