| Ridge to Norwich | 3,440.58 mi (5,537.08 km) |
| Ridge to Nottingham | 3,336.41 mi (5,369.43 km) |
| Ridge to Nuneaton | 3,331.85 mi (5,362.09 km) |
| Ridge to Oadby | 3,346.18 mi (5,385.16 km) |
| Ridge to Oakengates | 3,288.93 mi (5,293.01 km) |
| Ridge to Oakham | 3,358.58 mi (5,405.11 km) |
| Ridge to Oldbury | 3,310.04 mi (5,326.99 km) |
| Ridge to Oldham | 3,287.03 mi (5,289.96 km) |
| Ridge to Ollerton | 3,336.92 mi (5,370.26 km) |
| Ridge to Olton | 3,319.82 mi (5,342.73 km) |
| Ridge to Omagh | 3,066.64 mi (4,935.28 km) |
| Ridge to Ormesby | 3,306.11 mi (5,320.67 km) |
| Ridge to Ormskirk | 3,256.05 mi (5,240.11 km) |
| Ridge to Orpington | 3,418.96 mi (5,502.29 km) |
| Ridge to Ossett | 3,305.87 mi (5,320.29 km) |
