| Sonoma to Cernavoda | 6,438.20 mi (10,361.29 km) |
| Sonoma to Chitila | 6,387.01 mi (10,278.89 km) |
| Sonoma to Cisnadie | 6,273.90 mi (10,096.87 km) |
| Sonoma to Cluj-Napoca | 6,196.54 mi (9,972.37 km) |
| Sonoma to Codlea | 6,301.39 mi (10,141.11 km) |
| Sonoma to Comanesti | 6,275.07 mi (10,098.76 km) |
| Sonoma to Comarnic | 6,333.26 mi (10,192.39 km) |
| Sonoma to Constanta | 6,460.53 mi (10,397.21 km) |
| Sonoma to Corabia | 6,402.30 mi (10,303.51 km) |
| Sonoma to Costesti | 6,354.24 mi (10,226.16 km) |
| Sonoma to Covasna | 6,306.56 mi (10,149.42 km) |
| Sonoma to Craiova | 6,352.69 mi (10,223.67 km) |
| Sonoma to Cristuru Secuiesc | 6,255.86 mi (10,067.83 km) |
| Sonoma to Cugir | 6,249.22 mi (10,057.14 km) |
| Sonoma to Cumpana | 6,462.51 mi (10,400.40 km) |
