| Balham to Orbetello | 819.34 mi (1,318.61 km) |
| Balham to Oria | 1,135.25 mi (1,827.01 km) |
| Balham to Oristano | 900.56 mi (1,449.31 km) |
| Balham to Orta Nova | 1,025.43 mi (1,650.28 km) |
| Balham to Orte | 855.00 mi (1,375.99 km) |
| Balham to Ortona | 927.93 mi (1,493.36 km) |
| Balham to Orvieto | 832.32 mi (1,339.49 km) |
| Balham to Orzinuovi | 622.07 mi (1,001.12 km) |
| Balham to Osimo | 839.15 mi (1,350.48 km) |
| Balham to Ospitaletto | 619.22 mi (996.54 km) |
| Balham to Ostuni | 1,121.60 mi (1,805.04 km) |
| Balham to Ottaviano | 1,009.38 mi (1,624.43 km) |
| Balham to Ovada | 620.60 mi (998.75 km) |
| Balham to Ozieri | 867.89 mi (1,396.73 km) |
| Balham to Paceco | 1,116.26 mi (1,796.45 km) |
