| Petaluma to Olivares | 5,829.84 mi (9,382.22 km) |
| Petaluma to Olivenza | 5,731.37 mi (9,223.75 km) |
| Petaluma to Olot | 5,897.92 mi (9,491.78 km) |
| Petaluma to Onate | 5,688.14 mi (9,154.17 km) |
| Petaluma to Onda | 5,919.86 mi (9,527.09 km) |
| Petaluma to Onteniente | 5,966.40 mi (9,601.99 km) |
| Petaluma to Orihuela | 5,991.97 mi (9,643.14 km) |
| Petaluma to Osuna | 5,879.40 mi (9,461.97 km) |
| Petaluma to Ourense | 5,527.28 mi (8,895.30 km) |
| Petaluma to Oviedo | 5,551.42 mi (8,934.15 km) |
| Petaluma to Paiporta | 5,941.96 mi (9,562.66 km) |
| Petaluma to Pajara | 5,923.97 mi (9,533.71 km) |
| Petaluma to Palafolls | 5,933.70 mi (9,549.37 km) |
| Petaluma to Palafrugell | 5,934.14 mi (9,550.08 km) |
| Petaluma to Palamos | 5,936.82 mi (9,554.39 km) |
