| Walnut Creek to Cortona | 6,131.90 mi (9,868.34 km) |
| Walnut Creek to Cosenza | 6,482.77 mi (10,433.01 km) |
| Walnut Creek to Cossato | 5,893.17 mi (9,484.13 km) |
| Walnut Creek to Costa Volpino | 5,934.07 mi (9,549.97 km) |
| Walnut Creek to Creazzo | 5,989.55 mi (9,639.25 km) |
| Walnut Creek to Crema | 5,948.16 mi (9,572.63 km) |
| Walnut Creek to Cremona | 5,971.21 mi (9,609.74 km) |
| Walnut Creek to Crevalcore | 6,026.40 mi (9,698.55 km) |
| Walnut Creek to Crispiano | 6,433.23 mi (10,353.28 km) |
| Walnut Creek to Crosia | 6,481.50 mi (10,430.97 km) |
| Walnut Creek to Crotone | 6,519.76 mi (10,492.54 km) |
| Walnut Creek to Cuneo | 5,939.84 mi (9,559.24 km) |
| Walnut Creek to Cuorgne | 5,887.68 mi (9,475.31 km) |
| Walnut Creek to Cusano Milanino | 5,923.59 mi (9,533.10 km) |
| Walnut Creek to Cutro | 6,519.01 mi (10,491.34 km) |
