Earth Day Challenge
April 22
| Name | Age | Location | Country | Affiliation | Distance |
|---|---|---|---|---|---|
| Joshua K | 45 | USA | 5,000 | ||
| Ingve K | 42 | NOR | 10,059 | ||
| JAERI K. | 42 | KOR | 15,000 | ||
| Matthias K. | 39 | SUI | 5,339 | ||
| Heikki Kaakinen | 48 | FIN | 8,264 | ||
| Triin Kaal | 34 | EST | 7,020 | ||
| Eran Kabakov | 52 | FL | USA | CrossFit Decimate | 5,001 |
| Michal Kabath | 49 | Wrocław | POL | 10,000 | |
| Justin Kacher | 23 | USA | 1,085 | ||
| Cagri Kacmaz | 36 | Ankara | TUR | Turkish Rowing Team | 8,327 |
| Marko Kadakas | 47 | Tallinn | EST | 10,004 | |
| Kari Kaehaeri | 62 | GER | 6,537 | ||
| Justin Kaeser | 54 | NSW | AUS | 5,001 | |
| Louis Kahl | - | SUI | 10,163 | ||
| Sébastien Kahn | 45 | Angers | FRA | French National Gendarmerie | 5,343 |
| Tom Kai | 61 | Elmshorn | GER | Team Ruderathlet | 8,087 |
| Amy Kaida | 75 | Lodi, CA | USA | Team Delta | 6,013 |
| Tracey Kain | 53 | Tauranga | NZL | 17,692 | |
| Johannes Kaiser | 57 | GER | 4,213 | ||
| Traci Kaiser | 48 | USA | 5,000 | ||
| Chris Kakas | 49 | NC | USA | U.S. Marines | 5,876 |
| Debra Kakert | 60 | Davisburg, MI | USA | Age Without Limits | 7,065 |
| lance kakimoto | 63 | Honolulu, HI | USA | 4,495 | |
| Raji Kakkad | 58 | Austin, TX | USA | 4,596 | |
| Károly Kalauz | 44 | HUN | 7,000 | ||
| Karen Kalbekken | 45 | NOR | 5,009 | ||
| Mathew Kaley | 58 | Sydney, NSW | AUS | Skairies | 10,013 |
| Marc Kalicki | 43 | London | GBR | 6,161 | |
| Bartlomiej Kaliniak | 48 | Racibórz | POL | 7,673 | |
| Marcin Kalka | 45 | Rzeszow | POL | Polish Indoor Rowing Team | 6,000 |
| Jane Kalmes | 62 | USA | Recovery on Water - Chicago, IL | 5,345 | |
| Mike Kalten | 57 | Arlington, VA | USA | 6,253 | |
| Michael Kaminski | 46 | GER | 9,646 | ||
| Robert Kammeraad | 70 | USA | 7,686 | ||
| Rudi Kammerer | 74 | AUT | 6,515 | ||
| Kristian Kamph | 48 | AL | USA | 10,000 | |
| Kapil Kamra | 56 | USA | 6,321 | ||
| Alex Kanable | 38 | USA | 6,088 | ||
| Julie Kanarr | 61 | Port Townsend, WA | USA | 50,454 | |
| Jags kandasamy | 47 | USA | 5,000 | ||
| Ellen Kandell | 72 | Silver Spring, MD | USA | Washington Rowing School | 5,252 |
| Vesa Kanerva | 64 | FIN | 4,404 | ||
| Joy Kang | 37 | USA | 7,144 | ||
| Ralnade Kang | 45 | KOR | 13,025 | ||
| Matti Kanninen | 52 | FIN | 5,014 | ||
| Jógvan Páll Kannuberg | 60 | Leirvík | FRO | 10,000 | |
| Malav Kansara | 61 | Rancho Cucamonga | USA | 6,063 | |
| Arjun Kantamsetty | 22 | USA | Dallas United Crew | 6,600 | |
| Jan Kante | 53 | Amöneburg | GER | 11,607 | |
| Enayat Kapadia | 25 | USA | 25,159 |