| Festus to Clarksdale (Mississippi) | 278.32 mi (447.91 km) |
| Festus to Clarkston (Georgia) | 459.82 mi (740.01 km) |
| Festus to Clarksville (Indiana) | 251.90 mi (405.39 km) |
| Festus to Clarksville (Tennessee) | 203.38 mi (327.30 km) |
| Festus to Clawson (Michigan) | 484.43 mi (779.61 km) |
| Festus to Clay (Alabama) | 377.94 mi (608.23 km) |
| Festus to Clayton (California) | 1,706.03 mi (2,745.60 km) |
| Festus to Clayton (Missouri) | 29.68 mi (47.76 km) |
| Festus to Clayton (North Carolina) | 683.20 mi (1,099.50 km) |
| Festus to Clayton (Ohio) | 345.53 mi (556.08 km) |
| Festus to Clearfield (Utah) | 1,163.67 mi (1,872.75 km) |
| Festus to Clearlake (California) | 1,731.89 mi (2,787.20 km) |
| Festus to Clearwater (Florida) | 833.83 mi (1,341.92 km) |
| Festus to Cleburne (Texas) | 565.48 mi (910.05 km) |
| Festus to Clemmons (North Carolina) | 572.17 mi (920.81 km) |
