Earth Day Challenge
April 22
| Name | Age | Location | Country | Affiliation | Distance |
|---|---|---|---|---|---|
| Andreas Koalick | 55 | Cottbus | GER | 17,500 | |
| jordan kobert | 51 | USA | 5,228 | ||
| Daniel Kocarnik | 67 | Happy Valley, OR | USA | 5,000 | |
| Jonathan Kocarnik | 43 | Seattle, WA | USA | University of Washington | 20,541 |
| David Kochanowski | 42 | CAN | 14,066 | ||
| Lars Ködderitzsch | 49 | Köln | GER | Team Ruderathlet | 21,282 |
| Beth Kodysh | 37 | USA | 5,882 | ||
| Wolfgang Koehl | 31 | ITA | 5,031 | ||
| Jim Koehler | 67 | Green Bay, WI | USA | CrossFit Green Bay | 12,265 |
| Clay Koehler | 40 | IN | USA | 10,041 | |
| Jasper Koelewijn | 34 | NED | Pelargos | 7,000 | |
| Dick Koelling | 57 | Leicestershire | GBR | 10,070 | |
| Dennis Koelmel | 87 | USA | 5,402 | ||
| Fred Koene | 65 | Rotterdam | NED | Free Spirits | 8,000 |
| Fabien Koenig | 47 | FRA | French Navy | 6,000 | |
| Michel Koenigs | 64 | Lingenfeld | GER | Silent Water Neufeld | 23,379 |
| Robert Koenneker | 40 | GER | 5,906 | ||
| stacy koepplin | 56 | ponte vedra beach, FL | USA | 10,057 | |
| Harald Koester | 70 | Cologne | GER | 13,123 | |
| clint kohl | 37 | FRA | 4,270 | ||
| Ihor Kohut | 34 | Chicago, IL | USA | 5,486 | |
| Reijer Kok | 28 | Montfoort | NED | 7,500 | |
| hakan kökcü | 49 | Hannover | GER | 10,000 | |
| Ben Kokoruwe | 56 | Bromley | GBR | 5,000 | |
| Max Kokurin | 36 | Glenville, NY | USA | Aqueduct Rowing Club | 10,614 |
| Ivan Kolar | 53 | Smederevo | SRB | Long Beach Rowing Association | 26,364 |
| Drago Kolar | 61 | Münster | GER | 10,036 | |
| James Kolb | 69 | Jacksonville beach, FL | USA | Jacksonville Rowing Club | 10,000 |
| Herb Kolbe | 73 | Pittsburgh, PA | USA | 7,076 | |
| Lukas Kolberg | 35 | Hamburg | GER | 5,788 | |
| Dawid Kolbon | 41 | GER | 8,565 | ||
| Jade Koldingnsæs | 27 | Revetal | NOR | 5,000 | |
| Lisette Kolenbrander | 50 | NED | 10,051 | ||
| George Kollias | 52 | Athens | GRE | 8,000 | |
| colleen kolling | 64 | USA | 12,553 | ||
| Kim Kolody | 53 | Chicago, IL | USA | 5,000 | |
| An Komatsubara | 26 | JPN | Nippon Sport Science University | 12,972 | |
| Gregory Kondrasuk | 58 | Minneapolis, MN | USA | 6,921 | |
| Marek Konieczny | 65 | SUI | 6,849 | ||
| Kai König | 59 | Wesel | GER | 13,044 | |
| Mary Konrad | 67 | Waco, TX | USA | 3,820 | |
| Lucas Konrad-Parisi | 26 | Verona, NJ | USA | 5,009 | |
| Ralf Konvalinka | 52 | GER | 11,117 | ||
| Karl Konzert | 57 | Appiano BZ | ITA | 21,100 | |
| hans kooijmans | 65 | NED | 5,135 | ||
| Kayla Koon | 41 | USA | 6,210 | ||
| Scott Koon | 45 | USA | 3,995 | ||
| Linnea Koons | 69 | Readfield, ME | USA | 12,084 | |
| David Koons | 61 | CO | USA | 5,260 | |
| Jessica Koontz | 46 | WA | USA | 3,000 |