Earth Day Challenge
April 22
| Name | Age | Location | Country | Affiliation | Distance |
|---|---|---|---|---|---|
| Carmie McGuire | 48 | GA | USA | Atlanta Rowing Club | 46,223 |
| Rusty McGuire | 49 | USA | Atlanta Rowing Club | 10,967 | |
| Michael McGuirk | 83 | Bel Air, MD | USA | Baltimore Community Rowing | 23,292 |
| Joe McGuirk | 50 | Washington, DC | USA | DC Strokes | 7,105 |
| Zachary McGurk | 36 | USA | 21,369 | ||
| Peter McGurk | 44 | GBR | 5,334 | ||
| Dan McHugh | 64 | Coventry | GBR | 7,048 | |
| Ian McHugh | 61 | GBR | 13,502 | ||
| Rosalie McHugh Rheaume | 61 | Barre, VT | USA | Green Mountain CrossFit, Berlin, Vermont | 5,406 |
| Brandon McIe | 41 | Wyoming, MI | USA | 5,285 | |
| Stephen McIlwaine | 59 | Ottawa, ON | CAN | Thunder Bay Rowing Club | 8,000 |
| Jamie McInerney | 43 | IRL | 15,573 | ||
| Michael McInnes | 63 | CMCH, NJ | USA | U.S. Navy Veteran | 7,000 |
| William McIntosh | 65 | Herndon, VA | USA | University of Virginia | 6,358 |
| Laurie McIntosh | 64 | Grand Isle, VT | USA | 11,516 | |
| Mark McIntyre | 52 | Ballymena | GBR | 5,331 | |
| Terry McIntyre | 76 | La Crosse, WI | USA | CannadMac | 17,188 |
| Nancy McIntyre | 70 | La Crosse, WI | USA | CannadMac | 6,410 |
| Ginny McIver | 78 | Englewood, FL | USA | Lemon Bay Crew Club | 5,522 |
| Amy McKaskle | 46 | LA | USA | 5,000 | |
| James McKay | 46 | Newtownabbey | IRL | 14,944 | |
| Thomas McKay | 21 | AUS | 10,018 | ||
| Nicola Mckeague | 40 | Consett | GBR | British Army | 3,788 |
| Alan Mckee | 67 | Glasgow | GBR | 13,749 | |
| Lisa Mckeegan | 47 | USA | 8,059 | ||
| Dianna McKenna | - | USA | 13,651 | ||
| Ryan McKenna | 42 | Kingston, ON | CAN | 17,850 | |
| Jeff McKenna | 67 | Weaverville, NC | USA | University of Virginia | 8,865 |
| Tony McKenna | 63 | Faversham, Kent, UK | IRL | Fitness Matters | 7,170 |
| Ian Mckenzie | 70 | GBR | 5,000 | ||
| Jillian McKenzie | 34 | Toronto, ON | CAN | SCULLHOUSE Rowing | 10,020 |
| Chris McKeon | 59 | AUS | 6,286 | ||
| Mark McKeown | 69 | AUS | 5,835 | ||
| Harry McKeown | 40 | GBR | 6,182 | ||
| Stephen McKiernan | 52 | Boston, MA | USA | N-DIRT | 23,214 |
| Trevor McKinlay | 79 | NZL | 5,013 | ||
| Rhys McKinlay | 49 | Palmerston North | NZL | 6,500 | |
| Terry McKinn | 71 | Sydney, NSW | AUS | 7,939 | |
| Melinda McKinney | 50 | Marion, NC | USA | 4,527 | |
| David McKinnon | 56 | Bellevue, WA | USA | U.S. Navy Veteran | 10,233 |
| Andrew McKune | 53 | Canberra, ACT | AUS | 5,000 | |
| Ian McLaren | 60 | GBR | CrossFit Fareham | 8,600 | |
| James McLauchlan | 36 | Gerrards Cross | GBR | 6,621 | |
| Hugh McLaughlin | 77 | Middlebury, VT | USA | 4,060 | |
| Peggy McLaughlin | 73 | AB | CAN | Team Canada | 5,065 |
| Niall McLaughlin | 55 | Muscat | OMA | 5,000 | |
| Jim McLaughlin | 70 | PV, NY | USA | The Diamonds (Over Sixties Erging Group) | 4,813 |
| Doug McLaughlin | 74 | Lethbridge, AB | CAN | Team Canada | 16,019 |
| Kevin McLaughlin | 54 | St Louis, MO | USA | 7,913 | |
| Kevin McLaughlin | 46 | USA | 5,255 |