| Swansea to Norwich | 4,215.27 mi (6,783.83 km) |
| Swansea to Nottingham | 4,113.61 mi (6,620.21 km) |
| Swansea to Nuneaton | 4,114.06 mi (6,620.94 km) |
| Swansea to Oadby | 4,126.76 mi (6,641.37 km) |
| Swansea to Oakengates | 4,071.61 mi (6,552.62 km) |
| Swansea to Oakham | 4,137.65 mi (6,658.91 km) |
| Swansea to Oldbury | 4,093.66 mi (6,588.10 km) |
| Swansea to Oldham | 4,060.33 mi (6,534.47 km) |
| Swansea to Ollerton | 4,111.33 mi (6,616.55 km) |
| Swansea to Olton | 4,103.63 mi (6,604.16 km) |
| Swansea to Omagh | 3,838.83 mi (6,178.00 km) |
| Swansea to Ormesby | 4,066.79 mi (6,544.87 km) |
| Swansea to Ormskirk | 4,030.77 mi (6,486.90 km) |
| Swansea to Orpington | 4,208.60 mi (6,773.09 km) |
| Swansea to Ossett | 4,076.60 mi (6,560.65 km) |
