| Petaluma to Cortona | 6,128.48 mi (9,862.84 km) |
| Petaluma to Cosenza | 6,478.98 mi (10,426.92 km) |
| Petaluma to Cossato | 5,890.36 mi (9,479.62 km) |
| Petaluma to Costa Volpino | 5,930.41 mi (9,544.07 km) |
| Petaluma to Creazzo | 5,985.46 mi (9,632.66 km) |
| Petaluma to Crema | 5,944.84 mi (9,567.29 km) |
| Petaluma to Cremona | 5,967.85 mi (9,604.33 km) |
| Petaluma to Crevalcore | 6,022.75 mi (9,692.69 km) |
| Petaluma to Crispiano | 6,428.53 mi (10,345.72 km) |
| Petaluma to Crosia | 6,477.39 mi (10,424.35 km) |
| Petaluma to Crotone | 6,515.66 mi (10,485.94 km) |
| Petaluma to Cuneo | 5,937.76 mi (9,555.91 km) |
| Petaluma to Cuorgne | 5,885.15 mi (9,471.24 km) |
| Petaluma to Cusano Milanino | 5,920.40 mi (9,527.96 km) |
| Petaluma to Cutro | 6,514.99 mi (10,484.86 km) |
