| Islington to Olivares | 1,019.73 mi (1,641.10 km) |
| Islington to Olivenza | 950.61 mi (1,529.86 km) |
| Islington to Olot | 658.21 mi (1,059.29 km) |
| Islington to Onate | 597.87 mi (962.17 km) |
| Islington to Onda | 800.24 mi (1,287.86 km) |
| Islington to Onteniente | 879.33 mi (1,415.14 km) |
| Islington to Orihuela | 930.79 mi (1,497.96 km) |
| Islington to Osuna | 1,018.48 mi (1,639.09 km) |
| Islington to Ourense | 733.05 mi (1,179.74 km) |
| Islington to Oviedo | 625.41 mi (1,006.49 km) |
| Islington to Paiporta | 837.29 mi (1,347.48 km) |
| Islington to Pajara | 1,758.75 mi (2,830.44 km) |
| Islington to Palafolls | 695.45 mi (1,119.22 km) |
| Islington to Palafrugell | 682.70 mi (1,098.69 km) |
| Islington to Palamos | 687.18 mi (1,105.91 km) |
