| Swansea to Warminster | 4,125.04 mi (6,638.60 km) |
| Swansea to Warrington | 4,046.84 mi (6,512.75 km) |
| Swansea to Warsop | 4,106.45 mi (6,608.69 km) |
| Swansea to Warwick | 4,116.47 mi (6,624.83 km) |
| Swansea to Washington | 4,044.66 mi (6,509.25 km) |
| Swansea to Waterlooville | 4,179.83 mi (6,726.79 km) |
| Swansea to Watford | 4,180.95 mi (6,728.60 km) |
| Swansea to Wath upon Dearne | 4,090.62 mi (6,583.22 km) |
| Swansea to Wealdstone | 4,185.09 mi (6,735.25 km) |
| Swansea to Wednesfield | 4,088.38 mi (6,579.62 km) |
| Swansea to Welling | 4,206.40 mi (6,769.55 km) |
| Swansea to Wellingborough | 4,150.23 mi (6,679.14 km) |
| Swansea to Wellington | 4,090.64 mi (6,583.26 km) |
| Swansea to Wellington | 4,068.99 mi (6,548.41 km) |
| Swansea to Wells | 4,106.71 mi (6,609.11 km) |
