| Southampton to Norwich | 165.88 mi (266.96 km) |
| Southampton to Nottingham | 142.11 mi (228.70 km) |
| Southampton to Nuneaton | 112.00 mi (180.24 km) |
| Southampton to Oadby | 118.03 mi (189.95 km) |
| Southampton to Oakengates | 131.68 mi (211.91 km) |
| Southampton to Oakham | 125.48 mi (201.93 km) |
| Southampton to Oldbury | 113.78 mi (183.11 km) |
| Southampton to Oldham | 185.01 mi (297.75 km) |
| Southampton to Ollerton | 159.58 mi (256.82 km) |
| Southampton to Olton | 107.46 mi (172.94 km) |
| Southampton to Omagh | 354.05 mi (569.79 km) |
| Southampton to Ormesby | 252.13 mi (405.77 km) |
| Southampton to Ormskirk | 194.45 mi (312.94 km) |
| Southampton to Orpington | 72.84 mi (117.23 km) |
| Southampton to Ossett | 192.05 mi (309.07 km) |
