| South Portland to Wallingford | 3,145.10 mi (5,061.55 km) |
| South Portland to Wallington | 3,190.43 mi (5,134.50 km) |
| South Portland to Wallsend | 3,061.21 mi (4,926.54 km) |
| South Portland to Walsall | 3,089.80 mi (4,972.56 km) |
| South Portland to Walsall Wood | 3,090.84 mi (4,974.22 km) |
| South Portland to Waltham Abbey | 3,188.86 mi (5,131.98 km) |
| South Portland to Waltham Cross | 3,187.48 mi (5,129.75 km) |
| South Portland to Walthamstow | 3,190.28 mi (5,134.26 km) |
| South Portland to Walton upon Thames | 3,178.81 mi (5,115.80 km) |
| South Portland to Walton-on-the-Naze | 3,236.23 mi (5,208.20 km) |
| South Portland to Wandsworth | 3,186.27 mi (5,127.81 km) |
| South Portland to Wanstead | 3,192.43 mi (5,137.72 km) |
| South Portland to Wantage | 3,133.02 mi (5,042.12 km) |
| South Portland to Ware | 3,184.73 mi (5,125.33 km) |
| South Portland to Warfield | 3,164.38 mi (5,092.58 km) |
