| Castagneto Carducci to Nottingham | 864.69 mi (1,391.59 km) |
| Castagneto Carducci to Nuneaton | 852.75 mi (1,372.37 km) |
| Castagneto Carducci to Oadby | 844.86 mi (1,359.67 km) |
| Castagneto Carducci to Oakengates | 890.87 mi (1,433.71 km) |
| Castagneto Carducci to Oakham | 838.54 mi (1,349.49 km) |
| Castagneto Carducci to Oldbury | 868.54 mi (1,397.79 km) |
| Castagneto Carducci to Oldham | 921.83 mi (1,483.55 km) |
| Castagneto Carducci to Ollerton | 873.56 mi (1,405.85 km) |
| Castagneto Carducci to Olton | 858.91 mi (1,382.28 km) |
| Castagneto Carducci to Omagh | 1,126.91 mi (1,813.58 km) |
| Castagneto Carducci to Ormesby | 948.75 mi (1,526.86 km) |
| Castagneto Carducci to Ormskirk | 945.28 mi (1,521.28 km) |
| Castagneto Carducci to Orpington | 749.48 mi (1,206.18 km) |
| Castagneto Carducci to Ossett | 913.60 mi (1,470.30 km) |
| Castagneto Carducci to Oswaldtwistle | 939.56 mi (1,512.07 km) |
