| West Sacramento to Olivares | 5,772.92 mi (9,290.62 km) |
| West Sacramento to Olivenza | 5,674.62 mi (9,132.42 km) |
| West Sacramento to Olot | 5,845.11 mi (9,406.80 km) |
| West Sacramento to Onate | 5,634.15 mi (9,067.29 km) |
| West Sacramento to Onda | 5,865.39 mi (9,439.44 km) |
| West Sacramento to Onteniente | 5,911.43 mi (9,513.53 km) |
| West Sacramento to Orihuela | 5,936.66 mi (9,554.13 km) |
| West Sacramento to Osuna | 5,822.68 mi (9,370.70 km) |
| West Sacramento to Ourense | 5,471.58 mi (8,805.65 km) |
| West Sacramento to Oviedo | 5,496.61 mi (8,845.94 km) |
| West Sacramento to Paiporta | 5,887.26 mi (9,474.63 km) |
| West Sacramento to Pajara | 5,863.28 mi (9,436.04 km) |
| West Sacramento to Palafolls | 5,880.79 mi (9,464.22 km) |
| West Sacramento to Palafrugell | 5,881.46 mi (9,465.29 km) |
| West Sacramento to Palamos | 5,884.10 mi (9,469.55 km) |
