| Rio de Mouro to Nottingham | 1,054.54 mi (1,697.11 km) |
| Rio de Mouro to Nuneaton | 1,021.97 mi (1,644.70 km) |
| Rio de Mouro to Oadby | 1,033.71 mi (1,663.59 km) |
| Rio de Mouro to Oakengates | 1,016.69 mi (1,636.20 km) |
| Rio de Mouro to Oakham | 1,044.49 mi (1,680.95 km) |
| Rio de Mouro to Oldbury | 1,011.49 mi (1,627.84 km) |
| Rio de Mouro to Oldham | 1,076.37 mi (1,732.25 km) |
| Rio de Mouro to Ollerton | 1,072.27 mi (1,725.65 km) |
| Rio de Mouro to Olton | 1,010.75 mi (1,626.65 km) |
| Rio de Mouro to Omagh | 1,097.29 mi (1,765.92 km) |
| Rio de Mouro to Ormesby | 1,154.95 mi (1,858.71 km) |
| Rio de Mouro to Ormskirk | 1,066.84 mi (1,716.92 km) |
| Rio de Mouro to Orpington | 983.18 mi (1,582.27 km) |
| Rio de Mouro to Ossett | 1,093.31 mi (1,759.52 km) |
| Rio de Mouro to Oswaldtwistle | 1,085.16 mi (1,746.40 km) |
