| Petaluma to Castrovillari | 6,447.06 mi (10,375.54 km) |
| Petaluma to Catania | 6,552.01 mi (10,544.43 km) |
| Petaluma to Catanzaro | 6,512.34 mi (10,480.60 km) |
| Petaluma to Cattolica | 6,109.49 mi (9,832.28 km) |
| Petaluma to Cava de' Tirreni | 6,353.59 mi (10,225.11 km) |
| Petaluma to Cavallino | 6,470.98 mi (10,414.03 km) |
| Petaluma to Cavarzere | 6,024.44 mi (9,695.39 km) |
| Petaluma to Cave | 6,239.04 mi (10,040.77 km) |
| Petaluma to Cavriago | 6,006.42 mi (9,666.40 km) |
| Petaluma to Cavriglia | 6,100.47 mi (9,817.75 km) |
| Petaluma to Cazzago San Martino | 5,942.38 mi (9,563.34 km) |
| Petaluma to Ceccano | 6,264.80 mi (10,082.22 km) |
| Petaluma to Cecina | 6,084.24 mi (9,791.64 km) |
| Petaluma to Cefalu | 6,489.49 mi (10,443.83 km) |
| Petaluma to Ceglie Messapico | 6,432.62 mi (10,352.31 km) |
