| Balham to Olivares | 1,012.46 mi (1,629.40 km) |
| Balham to Olivenza | 943.39 mi (1,518.23 km) |
| Balham to Olot | 651.85 mi (1,049.05 km) |
| Balham to Onate | 590.63 mi (950.53 km) |
| Balham to Onda | 793.27 mi (1,276.65 km) |
| Balham to Onteniente | 872.32 mi (1,403.86 km) |
| Balham to Orihuela | 923.74 mi (1,486.62 km) |
| Balham to Osuna | 1,011.21 mi (1,627.38 km) |
| Balham to Ourense | 726.05 mi (1,168.47 km) |
| Balham to Oviedo | 618.25 mi (994.98 km) |
| Balham to Paiporta | 830.30 mi (1,336.23 km) |
| Balham to Pajara | 1,751.65 mi (2,819.01 km) |
| Balham to Palafolls | 689.13 mi (1,109.04 km) |
| Balham to Palafrugell | 676.50 mi (1,088.72 km) |
| Balham to Palamos | 680.97 mi (1,095.91 km) |
