| 5356 | 19 Sep 26 | Massachusetts Blue & Green 5K | 5K | Worcester, MA |
| 5357 | 25 Oct 26 | Masquerade 5K | 5K | Marlborough, CT |
| 5358 | 12 Jun 27 | Marys Peak Trail Run | 25K/50K | Blodgett, OR |
| 5359 | 21 Feb 27 | Maryland Indoor 5K and Family Fun Run at Arundel Mills Mall | 1M/5K | Hanover, MD |
| 5360 | 17 Oct 26 | Mary's Place By The Sea Walk A Thon and 5K | 5K | Ocean Grove, NJ |
| 5361 | 03 Apr 27 | Mary S. Young parkrun | 5K | West Linn, OR |
| 5362 | 05 Dec 26 | Mary Mingle 5K | 5K | Cape Girardeau, MO |
| 5363 | 19 Sep 26 | Mary Cleary 5K (Cruisin into Waterville) | 5K | Waterville, NY |
| 5364 | 09 Oct 26 | Martin House Miler | 12H/1H run/24H/3H/48H/48H relay/6H | Fort Worth, TX |
| 5365 | 26 Sep 26 | Martin County NAACP 5K/10K | 5K/10K | Stuart, FL |
| 5366 | 26 Nov 26 | Martha's Village and Kitchen Thanksgiving Day 5K | 5K | Palm Desert, CA |
| 5367 | 13 Mar 27 | Marshfield St. Patrick's Day 5K | 5K | Marshfield, MA |
| 5368 | 20 Sep 26 | Marshcreek Sprint Triathlon | Sprint Triathlon/Sprint Triathlon Relay | Downingtown, PA |
| 5369 | 01 Nov 26 | Marshall University Marathon | 5K/13.1M/26.2M | Huntington, WV |
| 5370 | 24 Oct 26 | Marshall Rotary Jack-O-Jog | 1M/5K | Marshall, IL |