| Dumbarton to Cortona | 1,141.23 mi (1,836.63 km) |
| Dumbarton to Cosenza | 1,492.28 mi (2,401.59 km) |
| Dumbarton to Cossato | 904.99 mi (1,456.44 km) |
| Dumbarton to Costa Volpino | 943.51 mi (1,518.43 km) |
| Dumbarton to Creazzo | 1,000.54 mi (1,610.22 km) |
| Dumbarton to Crema | 957.62 mi (1,541.13 km) |
| Dumbarton to Cremona | 980.60 mi (1,578.13 km) |
| Dumbarton to Crevalcore | 1,035.77 mi (1,666.92 km) |
| Dumbarton to Crispiano | 1,447.16 mi (2,328.98 km) |
| Dumbarton to Crosia | 1,491.94 mi (2,401.05 km) |
| Dumbarton to Crotone | 1,530.12 mi (2,462.49 km) |
| Dumbarton to Cuneo | 959.40 mi (1,544.00 km) |
| Dumbarton to Cuorgne | 901.93 mi (1,451.52 km) |
| Dumbarton to Cusano Milanino | 933.36 mi (1,502.09 km) |
| Dumbarton to Cutro | 1,529.10 mi (2,460.85 km) |
