| Ronciglione to Nottingham | 961.33 mi (1,547.11 km) |
| Ronciglione to Nuneaton | 950.43 mi (1,529.57 km) |
| Ronciglione to Oadby | 942.02 mi (1,516.04 km) |
| Ronciglione to Oakengates | 989.14 mi (1,591.86 km) |
| Ronciglione to Oakham | 935.21 mi (1,505.08 km) |
| Ronciglione to Oldbury | 966.74 mi (1,555.82 km) |
| Ronciglione to Oldham | 1,018.46 mi (1,639.05 km) |
| Ronciglione to Ollerton | 969.62 mi (1,560.45 km) |
| Ronciglione to Olton | 957.04 mi (1,540.20 km) |
| Ronciglione to Omagh | 1,225.76 mi (1,972.66 km) |
| Ronciglione to Ormesby | 1,042.59 mi (1,677.88 km) |
| Ronciglione to Ormskirk | 1,042.58 mi (1,677.87 km) |
| Ronciglione to Orpington | 847.54 mi (1,363.99 km) |
| Ronciglione to Ossett | 1,009.45 mi (1,624.55 km) |
| Ronciglione to Oswaldtwistle | 1,036.12 mi (1,667.48 km) |
