| Potomac to Wallingford | 3,623.56 mi (5,831.55 km) |
| Potomac to Wallington | 3,668.87 mi (5,904.47 km) |
| Potomac to Wallsend | 3,540.58 mi (5,698.02 km) |
| Potomac to Walsall | 3,568.73 mi (5,743.31 km) |
| Potomac to Walsall Wood | 3,569.79 mi (5,745.02 km) |
| Potomac to Waltham Abbey | 3,667.52 mi (5,902.30 km) |
| Potomac to Waltham Cross | 3,666.13 mi (5,900.06 km) |
| Potomac to Walthamstow | 3,668.87 mi (5,904.48 km) |
| Potomac to Walton upon Thames | 3,657.22 mi (5,885.73 km) |
| Potomac to Walton-on-the-Naze | 3,715.11 mi (5,978.89 km) |
| Potomac to Wandsworth | 3,664.76 mi (5,897.86 km) |
| Potomac to Wanstead | 3,671.02 mi (5,907.94 km) |
| Potomac to Wantage | 3,611.43 mi (5,812.04 km) |
| Potomac to Ware | 3,663.45 mi (5,895.75 km) |
| Potomac to Warfield | 3,642.78 mi (5,862.50 km) |
