| Swansea to Wallingford | 4,154.49 mi (6,686.00 km) |
| Swansea to Wallington | 4,199.66 mi (6,758.71 km) |
| Swansea to Wallsend | 4,041.64 mi (6,504.39 km) |
| Swansea to Walsall | 4,092.87 mi (6,586.84 km) |
| Swansea to Walsall Wood | 4,093.41 mi (6,587.70 km) |
| Swansea to Waltham Abbey | 4,195.29 mi (6,751.66 km) |
| Swansea to Waltham Cross | 4,193.96 mi (6,749.52 km) |
| Swansea to Walthamstow | 4,197.54 mi (6,755.29 km) |
| Swansea to Walton upon Thames | 4,188.43 mi (6,740.63 km) |
| Swansea to Walton-on-the-Naze | 4,238.67 mi (6,821.48 km) |
| Swansea to Wandsworth | 4,194.90 mi (6,751.04 km) |
| Swansea to Wanstead | 4,199.64 mi (6,758.67 km) |
| Swansea to Wantage | 4,143.09 mi (6,667.65 km) |
| Swansea to Ware | 4,190.21 mi (6,743.49 km) |
| Swansea to Warfield | 4,174.22 mi (6,717.76 km) |
