| Sonoma to Cortona | 6,120.96 mi (9,850.73 km) |
| Sonoma to Cosenza | 6,471.52 mi (10,414.90 km) |
| Sonoma to Cossato | 5,882.74 mi (9,467.35 km) |
| Sonoma to Costa Volpino | 5,922.92 mi (9,532.01 km) |
| Sonoma to Creazzo | 5,978.03 mi (9,620.71 km) |
| Sonoma to Crema | 5,937.30 mi (9,555.16 km) |
| Sonoma to Cremona | 5,960.32 mi (9,592.20 km) |
| Sonoma to Crevalcore | 6,015.26 mi (9,680.63 km) |
| Sonoma to Crispiano | 6,421.21 mi (10,333.93 km) |
| Sonoma to Crosia | 6,469.97 mi (10,412.41 km) |
| Sonoma to Crotone | 6,508.24 mi (10,474.00 km) |
| Sonoma to Cuneo | 5,930.04 mi (9,543.47 km) |
| Sonoma to Cuorgne | 5,877.49 mi (9,458.91 km) |
| Sonoma to Cusano Milanino | 5,912.84 mi (9,515.79 km) |
| Sonoma to Cutro | 6,507.56 mi (10,472.90 km) |
