| Widnes to Olivares | 1,113.89 mi (1,792.64 km) |
| Widnes to Olivenza | 1,035.07 mi (1,665.78 km) |
| Widnes to Olot | 809.06 mi (1,302.06 km) |
| Widnes to Onate | 713.86 mi (1,148.84 km) |
| Widnes to Onda | 933.08 mi (1,501.65 km) |
| Widnes to Onteniente | 1,009.68 mi (1,624.92 km) |
| Widnes to Orihuela | 1,058.97 mi (1,704.25 km) |
| Widnes to Osuna | 1,120.24 mi (1,802.85 km) |
| Widnes to Ourense | 797.68 mi (1,283.74 km) |
| Widnes to Oviedo | 705.62 mi (1,135.58 km) |
| Widnes to Paiporta | 968.97 mi (1,559.40 km) |
| Widnes to Pajara | 1,822.37 mi (2,932.83 km) |
| Widnes to Palafolls | 846.82 mi (1,362.82 km) |
| Widnes to Palafrugell | 836.31 mi (1,345.91 km) |
| Widnes to Palamos | 840.53 mi (1,352.70 km) |
