| Civitavecchia to Nottingham | 959.96 mi (1,544.90 km) |
| Civitavecchia to Nuneaton | 948.26 mi (1,526.08 km) |
| Civitavecchia to Oadby | 940.25 mi (1,513.19 km) |
| Civitavecchia to Oakengates | 986.47 mi (1,587.57 km) |
| Civitavecchia to Oakham | 933.81 mi (1,502.82 km) |
| Civitavecchia to Oldbury | 964.14 mi (1,551.63 km) |
| Civitavecchia to Oldham | 1,017.10 mi (1,636.87 km) |
| Civitavecchia to Ollerton | 968.66 mi (1,558.90 km) |
| Civitavecchia to Olton | 954.49 mi (1,536.11 km) |
| Civitavecchia to Omagh | 1,222.57 mi (1,967.53 km) |
| Civitavecchia to Ormesby | 1,043.07 mi (1,678.65 km) |
| Civitavecchia to Ormskirk | 1,040.71 mi (1,674.87 km) |
| Civitavecchia to Orpington | 845.05 mi (1,359.97 km) |
| Civitavecchia to Ossett | 1,008.64 mi (1,623.25 km) |
| Civitavecchia to Oswaldtwistle | 1,034.81 mi (1,665.37 km) |
