Searched 24 events from July 12, 1996 to April 05, 2018
| Name | Gender | From | Finish Count |
|---|---|---|---|
| Joey Luther | Male | Boulder, CO | 1 |
| David Lygre | Male | Washington | 1 |
| Dmitry Lysenko | Male | 1 | |
| John Machray | Male | British Columbia | 1 |
| Glenn Mackie | Male | Highland Village, TX | 6 |
| Eliza MacLean | Female | North Carolina | 1 |
| Jon MacManus | Male | Colorado | 2 |
| Kurt Madden | Male | California | 1 |
| Jim Magill | Male | California | 2 |
| Sherry Kae Mahieu | Female | New Mexico | 1 |
| Ted Mahon | Male | Aspen, CO | 8 |
| Matt Mahoney | Male | Florida | 4 |
| Stephane Marchand | Male | United States | 1 |
| Jeffrey Mark Wilbur | Male | Virginia | 1 |
| Greg Martell | Male | Wyoming | 1 |
| Mark Martell | Male | United Kingdom | 1 |
| Kevin Martin | Male | Ohio | 1 |
| Leonard Martin | Male | Tennessee | 2 |
| Ryan Martin | Male | Centennial, CO | 4 |
| Shane Martin | Male | Eden, UT | 2 |
| Bozena Maslanka | Male | California | 2 |
| Mike Mason | Male | North Carolina | 1 |
| Scott Mason | Male | Park City, UT | 1 |
| Andrew Matulionis | Male | Montana | 2 |
| Micheal McCarthy | Male | Oregon | 1 |
| Kirk McCarville | Male | Arizona | 2 |
| Paul McClintock | Male | United Kingdom | 1 |
| Sarah McCloskey | Female | Alta, UT | 2 |
| Steve Mcclung | Male | Durango, CO | 4 |
| Mark Mcdermott | Male | Oregon | 1 |
| Ryan Mcdermott | Male | Salt Lake City, UT | 4 |
| Mark C. McDermott | Male | United Kingdom | 1 |
| Ryan McDonald | Male | California | 1 |
| Elizabeth McGoff | Female | Montana | 1 |
| John McGrew | Male | Colorado | 3 |
| Douglas McInturff | Male | 1 | |
| Scott McKenzie | Male | California | 1 |
| Karl Meltzer | Male | Sandy, UT | 8 |
| Graham Melvin | Male | Bellingham, WA | 1 |
| Mark Melvin | Male | California | 3 |
| Albert Meyer | Male | Connecticut | 1 |
| Bert Meyer | Male | Connecticut | 1 |
| Dan Meyers | Male | Mammoth Lakes, CA | 1 |
| Joshua Mietz | Male | Colorado | 1 |
| Denis Mikhaylov | Male | New Jersey | 1 |
| Milan Milanovich | Male | Switzerland | 1 |
| Geoff Miller | Male | Colorado | 1 |
| Geoffrey Miller | Male | Colorado | 1 |
| James Miller | Male | Colorado | 2 |
| Marc Miller | Male | Wyoming | 1 |