| Cassino to Nottingham | 1,054.30 mi (1,696.72 km) |
| Cassino to Nuneaton | 1,044.46 mi (1,680.90 km) |
| Cassino to Oadby | 1,035.55 mi (1,666.55 km) |
| Cassino to Oakengates | 1,083.73 mi (1,744.10 km) |
| Cassino to Oakham | 1,028.25 mi (1,654.82 km) |
| Cassino to Oldbury | 1,061.29 mi (1,707.98 km) |
| Cassino to Oldham | 1,111.35 mi (1,788.54 km) |
| Cassino to Ollerton | 1,062.00 mi (1,709.13 km) |
| Cassino to Olton | 1,051.51 mi (1,692.24 km) |
| Cassino to Omagh | 1,320.80 mi (2,125.63 km) |
| Cassino to Ormesby | 1,132.69 mi (1,822.89 km) |
| Cassino to Ormskirk | 1,136.12 mi (1,828.42 km) |
| Cassino to Orpington | 942.07 mi (1,516.11 km) |
| Cassino to Ossett | 1,101.56 mi (1,772.79 km) |
| Cassino to Oswaldtwistle | 1,128.93 mi (1,816.84 km) |
