| Sonoma to Cocentaina | 5,967.88 mi (9,604.38 km) |
| Sonoma to Coin | 5,912.16 mi (9,514.70 km) |
| Sonoma to Colindres | 5,625.80 mi (9,053.85 km) |
| Sonoma to Collado-Villalba | 5,743.20 mi (9,242.78 km) |
| Sonoma to Colmenar Viejo | 5,750.75 mi (9,254.94 km) |
| Sonoma to Colmenarejo | 5,746.48 mi (9,248.07 km) |
| Sonoma to Conil de la Frontera | 5,879.90 mi (9,462.78 km) |
| Sonoma to Consuegra | 5,816.28 mi (9,360.39 km) |
| Sonoma to Corbera de Llobregat | 5,911.47 mi (9,513.60 km) |
| Sonoma to Cordoba | 5,850.73 mi (9,415.84 km) |
| Sonoma to Coria del Rio | 5,831.46 mi (9,384.82 km) |
| Sonoma to Crevillente | 5,980.10 mi (9,624.04 km) |
| Sonoma to Cuarte de Huerva | 5,805.40 mi (9,342.89 km) |
| Sonoma to Cubellas | 5,913.62 mi (9,517.06 km) |
| Sonoma to Cuellar | 5,694.06 mi (9,163.70 km) |
