| Cabeceiras de Basto to Nottingham | 851.30 mi (1,370.04 km) |
| Cabeceiras de Basto to Nuneaton | 818.73 mi (1,317.62 km) |
| Cabeceiras de Basto to Oadby | 830.46 mi (1,336.50 km) |
| Cabeceiras de Basto to Oakengates | 813.78 mi (1,309.65 km) |
| Cabeceiras de Basto to Oakham | 841.27 mi (1,353.90 km) |
| Cabeceiras de Basto to Oldbury | 808.36 mi (1,300.93 km) |
| Cabeceiras de Basto to Oldham | 873.57 mi (1,405.88 km) |
| Cabeceiras de Basto to Ollerton | 869.04 mi (1,398.59 km) |
| Cabeceiras de Basto to Olton | 807.56 mi (1,299.64 km) |
| Cabeceiras de Basto to Omagh | 902.74 mi (1,452.82 km) |
| Cabeceiras de Basto to Ormesby | 952.03 mi (1,532.15 km) |
| Cabeceiras de Basto to Ormskirk | 864.57 mi (1,391.40 km) |
| Cabeceiras de Basto to Orpington | 780.91 mi (1,256.75 km) |
| Cabeceiras de Basto to Ossett | 890.31 mi (1,432.82 km) |
| Cabeceiras de Basto to Oswaldtwistle | 882.61 mi (1,420.42 km) |
