| Highgate to Olivares | 1,020.94 mi (1,643.04 km) |
| Highgate to Olivenza | 951.64 mi (1,531.52 km) |
| Highgate to Olot | 660.45 mi (1,062.88 km) |
| Highgate to Onate | 599.39 mi (964.62 km) |
| Highgate to Onda | 802.13 mi (1,290.91 km) |
| Highgate to Onteniente | 881.18 mi (1,418.12 km) |
| Highgate to Orihuela | 932.61 mi (1,500.88 km) |
| Highgate to Osuna | 1,019.83 mi (1,641.25 km) |
| Highgate to Ourense | 733.68 mi (1,180.75 km) |
| Highgate to Oviedo | 626.27 mi (1,007.88 km) |
| Highgate to Paiporta | 839.16 mi (1,350.49 km) |
| Highgate to Pajara | 1,759.52 mi (2,831.67 km) |
| Highgate to Palafolls | 697.70 mi (1,122.84 km) |
| Highgate to Palafrugell | 684.99 mi (1,102.39 km) |
| Highgate to Palamos | 689.47 mi (1,109.59 km) |
