| Swansea to Laindon | 4,214.73 mi (6,782.95 km) |
| Swansea to Lambeth | 4,196.65 mi (6,753.85 km) |
| Swansea to Lanark | 3,942.11 mi (6,344.22 km) |
| Swansea to Lancaster | 4,020.79 mi (6,470.83 km) |
| Swansea to Lancing | 4,209.11 mi (6,773.90 km) |
| Swansea to Larbert | 3,931.55 mi (6,327.21 km) |
| Swansea to Largs | 3,899.47 mi (6,275.59 km) |
| Swansea to Larkhall | 3,933.48 mi (6,330.32 km) |
| Swansea to Launceston | 4,055.13 mi (6,526.10 km) |
| Swansea to Leagrave | 4,170.75 mi (6,712.17 km) |
| Swansea to Leatherhead | 4,194.50 mi (6,750.39 km) |
| Swansea to Ledbury | 4,091.52 mi (6,584.66 km) |
| Swansea to Leeds | 4,074.32 mi (6,556.99 km) |
| Swansea to Leek | 4,076.16 mi (6,559.94 km) |
| Swansea to Leicester | 4,123.60 mi (6,636.29 km) |
