| Sonoma to Collegno | 5,892.43 mi (9,482.95 km) |
| Sonoma to Cologno al Serio | 5,925.61 mi (9,536.35 km) |
| Sonoma to Cologno Monzese | 5,916.73 mi (9,522.06 km) |
| Sonoma to Colorno | 5,981.47 mi (9,626.25 km) |
| Sonoma to Comacchio | 6,044.83 mi (9,728.22 km) |
| Sonoma to Comiso | 6,562.08 mi (10,560.64 km) |
| Sonoma to Como | 5,895.54 mi (9,487.95 km) |
| Sonoma to Concordia Sagittaria | 6,001.60 mi (9,658.64 km) |
| Sonoma to Concorezzo | 5,914.95 mi (9,519.20 km) |
| Sonoma to Conegliano | 5,979.92 mi (9,623.75 km) |
| Sonoma to Conselice | 6,045.67 mi (9,729.56 km) |
| Sonoma to Conselve | 6,005.64 mi (9,665.15 km) |
| Sonoma to Conversano | 6,396.29 mi (10,293.84 km) |
| Sonoma to Copertino | 6,462.75 mi (10,400.79 km) |
| Sonoma to Copparo | 6,023.77 mi (9,694.32 km) |
