| 15631 | 20 Sep 25 | 2025 New River Trail Challenge Triathlon | triathlon | Max Meadows, VA |
| 15632 | 04 Oct 25 | 2025 Nat Greene's Revenge Triathlon & Duathlon | triathlon | Greensboro, NC |
| 15633 | 04 Oct 25 | 2025 Nampa Rec Try-A-Tri Indoor Triathlon | triathlon | Nampa, ID |
| 15634 | 20 Sep 25 | 2025 My Sole Knows 5k | 5K | Upper Marlboro, MD |
| 15635 | 28 Sep 25 | 2025 Muncie Sprint and Olympic #2 - Last Chance Triathlon | triathlon | Selma, IN |
| 15636 | 26 Oct 25 | 2025 Mountain Man Biathlon | triathlon | Morristown, NJ |
| 15637 | 07 Sep 25 | 2025 Mount Vernon Park 5k/10k | 10K/5K | Alexandria, VA |
| 15638 | 12 Oct 25 | 2025 Monster Triathlon Keller | triathlon | Keller, TX |
| 15639 | 11 Oct 25 | 2025 Monster Kids Triathlon . . | triathlon | Keller, TX |
| 15640 | 24 Dec 25 | 2025 Mistletoe Madness 5k/10k | 10K/5K | Arlington, VA |
| 15641 | 12 Oct 25 | 2025 Mission Bay Triathlon | triathlon | San Diego, CA |
| 15642 | 15 Nov 25 | 2025 Miriam's Kitchen 5k/10k | 10K/5K | Washington, DC |
| 15643 | 13 Sep 25 | 2025 Mini Maniac Youth Triathlon . . | triathlon | Shirley, NY |
| 15644 | 04 Oct 25 | 2025 Miles for Mammograms 5k/10k | 10K/5K | Sterling, VA |
| 15645 | 14 Sep 25 | 2025 Mighty Mississenewa Triathlon | triathlon | Peru, IN |