| Petaluma to Collegno | 5,900.12 mi (9,495.32 km) |
| Petaluma to Cologno al Serio | 5,933.14 mi (9,548.47 km) |
| Petaluma to Cologno Monzese | 5,924.29 mi (9,534.23 km) |
| Petaluma to Colorno | 5,989.00 mi (9,638.36 km) |
| Petaluma to Comacchio | 6,052.26 mi (9,740.17 km) |
| Petaluma to Comiso | 6,569.79 mi (10,573.05 km) |
| Petaluma to Como | 5,903.09 mi (9,500.10 km) |
| Petaluma to Concordia Sagittaria | 6,008.92 mi (9,670.43 km) |
| Petaluma to Concorezzo | 5,922.50 mi (9,531.35 km) |
| Petaluma to Conegliano | 5,987.27 mi (9,635.58 km) |
| Petaluma to Conselice | 6,053.13 mi (9,741.57 km) |
| Petaluma to Conselve | 6,013.06 mi (9,677.09 km) |
| Petaluma to Conversano | 6,403.61 mi (10,305.61 km) |
| Petaluma to Copertino | 6,470.04 mi (10,412.52 km) |
| Petaluma to Copparo | 6,031.21 mi (9,706.29 km) |
