| West Carson to Olivares | 5,863.57 mi (9,436.51 km) |
| West Carson to Olivenza | 5,768.13 mi (9,282.91 km) |
| West Carson to Olot | 5,985.81 mi (9,633.23 km) |
| West Carson to Onate | 5,762.80 mi (9,274.33 km) |
| West Carson to Onda | 5,987.50 mi (9,635.96 km) |
| West Carson to Onteniente | 6,027.40 mi (9,700.16 km) |
| West Carson to Orihuela | 6,048.21 mi (9,733.65 km) |
| West Carson to Osuna | 5,916.05 mi (9,520.96 km) |
| West Carson to Ourense | 5,580.17 mi (8,980.42 km) |
| West Carson to Oviedo | 5,616.20 mi (9,038.41 km) |
| West Carson to Paiporta | 6,006.52 mi (9,666.56 km) |
| West Carson to Pajara | 5,881.28 mi (9,465.01 km) |
| West Carson to Palafolls | 6,020.23 mi (9,688.63 km) |
| West Carson to Palafrugell | 6,023.29 mi (9,693.54 km) |
| West Carson to Palamos | 6,025.52 mi (9,697.14 km) |
