| San Pietro in Casale to Clarkston (Georgia) | 4,872.91 mi (7,842.19 km) |
| San Pietro in Casale to Clarksville (Indiana) | 4,732.53 mi (7,616.28 km) |
| San Pietro in Casale to Clarksville (Tennessee) | 4,877.32 mi (7,849.28 km) |
| San Pietro in Casale to Clawson (Michigan) | 4,441.26 mi (7,147.52 km) |
| San Pietro in Casale to Clay (Alabama) | 4,979.67 mi (8,014.00 km) |
| San Pietro in Casale to Clayton (California) | 6,029.05 mi (9,702.82 km) |
| San Pietro in Casale to Clayton (Missouri) | 4,902.17 mi (7,889.28 km) |
| San Pietro in Casale to Clayton (North Carolina) | 4,539.21 mi (7,305.15 km) |
| San Pietro in Casale to Clayton (Ohio) | 4,604.67 mi (7,410.50 km) |
| San Pietro in Casale to Clearfield (Utah) | 5,552.59 mi (8,936.03 km) |
| San Pietro in Casale to Clearlake (California) | 5,988.30 mi (9,637.24 km) |
| San Pietro in Casale to Clearwater (Florida) | 5,076.63 mi (8,170.04 km) |
| San Pietro in Casale to Cleburne (Texas) | 5,490.64 mi (8,836.34 km) |
| San Pietro in Casale to Clemmons (North Carolina) | 4,607.23 mi (7,414.62 km) |
| San Pietro in Casale to Clemson (South Carolina) | 4,771.84 mi (7,679.53 km) |
