| Sonoma to Cervignano del Friuli | 6,011.21 mi (9,674.10 km) |
| Sonoma to Cesa | 6,317.45 mi (10,166.96 km) |
| Sonoma to Cesano Maderno | 5,907.26 mi (9,506.81 km) |
| Sonoma to Cesena | 6,078.67 mi (9,782.68 km) |
| Sonoma to Cesenatico | 6,079.31 mi (9,783.71 km) |
| Sonoma to Cetraro | 6,451.38 mi (10,382.49 km) |
| Sonoma to Cherasco | 5,924.70 mi (9,534.88 km) |
| Sonoma to Chiampo | 5,971.59 mi (9,610.35 km) |
| Sonoma to Chiaravalle | 6,139.68 mi (9,880.87 km) |
| Sonoma to Chiari | 5,934.35 mi (9,550.42 km) |
| Sonoma to Chiavari | 5,986.12 mi (9,633.73 km) |
| Sonoma to Chieri | 5,903.29 mi (9,500.42 km) |
| Sonoma to Chieti | 6,235.08 mi (10,034.39 km) |
| Sonoma to Chioggia | 6,017.67 mi (9,684.50 km) |
| Sonoma to Chiusi | 6,134.69 mi (9,872.83 km) |
