| 2021-09-02 | KingCo XC - Pre-Season 2-Mile Class Races | Lake Sammamish State Park | |
| 2021-09-08 | Bellevue, Hazen, Interlake & Juanita | Marymoor Park | |
| 2021-09-15 | Hazen, Interlake, Liberty, Mercer Island @ Philip Arnold Park | Philip Arnold Park | |
| 2021-09-29 | Lake Washington vs Interlake | Marymoor Park | |
| 2021-10-02 | NIKE -- 14TH ANNUAL TWILIGHT XC INVITATIONAL | Cedarcrest Golf Course | |
| 2021-10-06 | Bellevue, Evergreen, Juanita, Liberty, Tyee @ Interlake | Marymoor Park | |
| 2021-10-09 | Bill Kehoe South Sound Invite | St. Martin's University | |
| 2021-10-13 | Bellevue, Mercer Island, Interlake @ Sammamish | Robinswood Park | |
| 2021-10-23 | Kingco Championships | Lake Sammamish State Park | |
| 2021-10-30 | Sea-King District 2 Championships | Lake Sammamish State Park | |