| Catonsville to Cortona | 4,386.76 mi (7,059.80 km) |
| Catonsville to Cosenza | 4,719.73 mi (7,595.68 km) |
| Catonsville to Cossato | 4,145.46 mi (6,671.47 km) |
| Catonsville to Costa Volpino | 4,219.74 mi (6,791.02 km) |
| Catonsville to Creazzo | 4,288.28 mi (6,901.32 km) |
| Catonsville to Crema | 4,217.02 mi (6,786.63 km) |
| Catonsville to Cremona | 4,239.63 mi (6,823.03 km) |
| Catonsville to Crevalcore | 4,301.37 mi (6,922.39 km) |
| Catonsville to Crispiano | 4,713.22 mi (7,585.20 km) |
| Catonsville to Crosia | 4,732.42 mi (7,616.09 km) |
| Catonsville to Crotone | 4,766.60 mi (7,671.10 km) |
| Catonsville to Cuneo | 4,156.03 mi (6,688.48 km) |
| Catonsville to Cuorgne | 4,128.68 mi (6,644.48 km) |
| Catonsville to Cusano Milanino | 4,189.67 mi (6,742.63 km) |
| Catonsville to Cutro | 4,762.60 mi (7,664.66 km) |
