| Walthamstow to Olivares | 1,023.50 mi (1,647.16 km) |
| Walthamstow to Olivenza | 954.55 mi (1,536.20 km) |
| Walthamstow to Olot | 660.22 mi (1,062.52 km) |
| Walthamstow to Onate | 601.27 mi (967.66 km) |
| Walthamstow to Onda | 803.05 mi (1,292.39 km) |
| Walthamstow to Onteniente | 882.21 mi (1,419.78 km) |
| Walthamstow to Orihuela | 933.73 mi (1,502.70 km) |
| Walthamstow to Osuna | 1,022.10 mi (1,644.91 km) |
| Walthamstow to Ourense | 737.28 mi (1,186.54 km) |
| Walthamstow to Oviedo | 629.48 mi (1,013.05 km) |
| Walthamstow to Paiporta | 840.13 mi (1,352.06 km) |
| Walthamstow to Pajara | 1,762.89 mi (2,837.10 km) |
| Walthamstow to Palafolls | 697.42 mi (1,122.39 km) |
| Walthamstow to Palafrugell | 684.52 mi (1,101.63 km) |
| Walthamstow to Palamos | 689.02 mi (1,108.87 km) |
