| Olbia to Nottingham | 969.32 mi (1,559.97 km) |
| Olbia to Nuneaton | 953.15 mi (1,533.95 km) |
| Olbia to Oadby | 947.58 mi (1,524.99 km) |
| Olbia to Oakengates | 987.99 mi (1,590.02 km) |
| Olbia to Oakham | 943.34 mi (1,518.16 km) |
| Olbia to Oldbury | 966.31 mi (1,555.12 km) |
| Olbia to Oldham | 1,025.83 mi (1,650.91 km) |
| Olbia to Ollerton | 980.26 mi (1,577.57 km) |
| Olbia to Olton | 957.17 mi (1,540.41 km) |
| Olbia to Omagh | 1,218.62 mi (1,961.17 km) |
| Olbia to Ormesby | 1,061.99 mi (1,709.10 km) |
| Olbia to Ormskirk | 1,046.24 mi (1,683.75 km) |
| Olbia to Orpington | 849.69 mi (1,367.44 km) |
| Olbia to Ossett | 1,020.65 mi (1,642.57 km) |
| Olbia to Oswaldtwistle | 1,043.59 mi (1,679.49 km) |
