Searched 18 events from May 13, 2017 to May 10, 2025
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Travis Massey | Male | Loveland, CO | 3 |
| Tom Masterson | Male | Boulder, CO | 1 |
| Cameron Mathews | Male | Highlands Ranch, CO | 4 |
| Shane Mathias | Male | Ogden, UT | 1 |
| Clay Mathre | Male | Boulder, CO | 4 |
| Joe Matta | Male | Boulder, CO | 1 |
| Mackenzie Mau | Male | Denver, CO | 1 |
| Jane Maus | Female | Salt Lake City, UT | 1 |
| Jennifer Mawn | Female | Golden, CO | 1 |
| Alex May | Male | Fort Collins, CO | 1 |
| Benjamin Mayer | Male | Bellvue, CO | 5 |
| Howard Mayson | Male | Breckenridge, CO | 2 |
| Josh Mazie | Male | Longmont, CO | 1 |
| Mike Mazzarese | Male | Evergreen, CO | 1 |
| Carrie McAdam Marx | Female | Salt Lake City, UT | 1 |
| Ryan McAfee | Male | Colorado Springs, CO | 1 |
| Jake McCart | Male | Fort Collins, CO | 1 |
| Bryant McCarty | Male | Cheyenne, WY | 1 |
| Connor McCarty | Male | Fort Collins, CO | 2 |
| Heidi McCarty | Female | Torrington, WY | 1 |
| Rob McCasey | Male | Golden, CO | 1 |
| Kelly McConnell | Female | Boulder, CO | 1 |
| Jordan McCoy | Female | Dayton, WY | 1 |
| Jim McCue | Male | Denver, CO | 1 |
| Whitney McCurry | Female | Fort Collins, CO | 1 |
| Katelyn McDaniel | Female | Denver, CO | 1 |
| Richard McDonnell | Male | Greensboro, NC | 3 |
| Brandon McElroy | Male | Laramie, WY | 1 |
| Gavin McEwen | Male | Fort Collins, CO | 1 |
| Lisa McGinnis | Female | Sand Springs, OK | 1 |
| Patrick McGlade | Male | Lakewood, CO | 1 |
| James Mcgowan | Male | Sitka, AK | 1 |
| Ivy McGowan | Female | Kailua Kona, HI | 1 |
| Nick McHargue | Male | Leadville, CO | 1 |
| Nate McHenry | Male | Windsor, CO | 1 |
| Matthew McHugh | Male | Fort Collins, CO | 1 |
| Jordon McIlvain | Female | Glenwood Springs, CO | 1 |
| Liza McIntosh | Female | Denver, CO | 1 |
| Reed McIntyre | Male | Denver, CO | 1 |
| Holly McKinney | Female | Denver, CO | 1 |
| Elise McKnight | Female | Fort Collins, CO | 3 |
| Deanna McLaughlin | Female | Salt Lake City, UT | 2 |
| Jennifer McLellan | Female | Colorado Springs, CO | 1 |
| James Mcloughlin | Male | Fort Collins, CO | 1 |
| Keira McMahon | Female | Nederland, CO | 1 |
| Beth McManus | Female | Louisville, CO | 1 |
| Keri Mcmeans | Female | Dayton, WY | 2 |
| Jonathan McMinn | Male | Fort Collins, CO | 1 |
| Jennifer Mcmurtrey | Female | Longmont, CO | 1 |
| Ian McNabb | Male | Fort Collins, CO | 1 |