| Mattoon to Cortona | 4,866.66 mi (7,832.13 km) |
| Mattoon to Cosenza | 5,209.92 mi (8,384.56 km) |
| Mattoon to Cossato | 4,621.47 mi (7,437.53 km) |
| Mattoon to Costa Volpino | 4,688.59 mi (7,545.55 km) |
| Mattoon to Creazzo | 4,755.13 mi (7,652.64 km) |
| Mattoon to Crema | 4,690.14 mi (7,548.05 km) |
| Mattoon to Cremona | 4,713.31 mi (7,585.33 km) |
| Mattoon to Crevalcore | 4,774.56 mi (7,683.91 km) |
| Mattoon to Crispiano | 5,192.79 mi (8,356.99 km) |
| Mattoon to Crosia | 5,219.43 mi (8,399.86 km) |
| Mattoon to Crotone | 5,255.19 mi (8,457.40 km) |
| Mattoon to Cuneo | 4,641.54 mi (7,469.83 km) |
| Mattoon to Cuorgne | 4,607.29 mi (7,414.72 km) |
| Mattoon to Cusano Milanino | 4,662.98 mi (7,504.34 km) |
| Mattoon to Cutro | 5,251.90 mi (8,452.12 km) |
