| Acton to Olivares | 1,015.39 mi (1,634.12 km) |
| Acton to Olivenza | 945.82 mi (1,522.15 km) |
| Acton to Olot | 657.66 mi (1,058.40 km) |
| Acton to Onate | 594.43 mi (956.64 km) |
| Acton to Onda | 798.10 mi (1,284.41 km) |
| Acton to Onteniente | 877.03 mi (1,411.45 km) |
| Acton to Orihuela | 928.36 mi (1,494.05 km) |
| Acton to Osuna | 1,014.51 mi (1,632.70 km) |
| Acton to Ourense | 727.39 mi (1,170.62 km) |
| Acton to Oviedo | 620.23 mi (998.16 km) |
| Acton to Paiporta | 835.07 mi (1,343.92 km) |
| Acton to Pajara | 1,753.36 mi (2,821.76 km) |
| Acton to Palafolls | 694.98 mi (1,118.46 km) |
| Acton to Palafrugell | 682.49 mi (1,098.36 km) |
| Acton to Palamos | 686.94 mi (1,105.52 km) |
