| OE Tri Meet | 08/26/2021 | Oswego, IL | Oswego East - Oswego East XC Course |
| Plainfield City Championship | 08/31/2021 | Plainfield, IL | Plainfield North High School - Plainfield North Cross Country Course |
| Plainfield Central (Wildcat Invitational) | 09/04/2021 | Plainfield, IL | Plainfield Central - South grounds |
| Joliet West Dual Meet | 09/07/2021 | Plainfield, IL | Plainfield Central - South grounds |
| Richard Spring Invitational | 09/18/2021 | Peoria, IL | - Detweiller Park |
| Schaumberg McNider Invitational | 09/25/2021 | , | - |
| Plainfield East Dual Meet | 09/28/2021 | Plainfield, IL | Plainfield Central - South grounds |
| Joe Mortimer Frosh/Soph Invitational | 09/30/2021 | Tinley Park, IL | Andrew - Tinley Park Park District 8125 W. 171st St, Tinley Park, Illinois |
| Peoria High School Meet | 10/02/2021 | Peoria, IL | - Detweiller Park |
| Lockport Frosh Soph | 10/06/2021 | Lockport, IL | Lockport - Campus |
| Lakes Twilight | 10/07/2021 | Lake Villa, IL | Lakes (Lake Villa) - Lakes Community High School |
| SPC Championship | 10/15/2021 | , | - |
| Time Time Trial #1 | 10/22/2021 | Plainfield, IL | Plainfield Central - South grounds |
| IHSA Regional | 10/23/2021 | Hampton, IL | East Moline United Township - Empire Park |
| IHSA Sectional | 10/30/2021 | Quincy, IL | Quincy (Sr) High School - Bob Mays Park |
| IHSA Boys 3A Cross Cross Country State Championship | 11/06/2021 | Peoria, IL | - Detweiller Park |
