| Barrow in Furness to Olivares | 1,161.77 mi (1,869.70 km) |
| Barrow in Furness to Olivenza | 1,081.22 mi (1,740.06 km) |
| Barrow in Furness to Olot | 864.57 mi (1,391.39 km) |
| Barrow in Furness to Onate | 766.26 mi (1,233.18 km) |
| Barrow in Furness to Onda | 987.23 mi (1,588.79 km) |
| Barrow in Furness to Onteniente | 1,063.48 mi (1,711.50 km) |
| Barrow in Furness to Orihuela | 1,112.46 mi (1,790.33 km) |
| Barrow in Furness to Osuna | 1,169.52 mi (1,882.16 km) |
| Barrow in Furness to Ourense | 840.61 mi (1,352.83 km) |
| Barrow in Furness to Oviedo | 752.20 mi (1,210.54 km) |
| Barrow in Furness to Paiporta | 1,022.95 mi (1,646.28 km) |
| Barrow in Furness to Pajara | 1,862.50 mi (2,997.40 km) |
| Barrow in Furness to Palafolls | 902.33 mi (1,452.15 km) |
| Barrow in Furness to Palafrugell | 891.84 mi (1,435.28 km) |
| Barrow in Furness to Palamos | 896.06 mi (1,442.07 km) |
