| Swansea to Leigh | 4,046.68 mi (6,512.50 km) |
| Swansea to Leigh-on-Sea | 4,224.74 mi (6,799.07 km) |
| Swansea to Leighton Buzzard | 4,162.84 mi (6,699.44 km) |
| Swansea to Leith | 3,956.20 mi (6,366.90 km) |
| Swansea to Lemington | 4,035.29 mi (6,494.17 km) |
| Swansea to Leominster | 4,073.80 mi (6,556.15 km) |
| Swansea to Lerwick | 3,920.41 mi (6,309.29 km) |
| Swansea to Letchworth | 4,177.52 mi (6,723.08 km) |
| Swansea to Leven | 3,956.97 mi (6,368.13 km) |
| Swansea to Lewes | 4,220.68 mi (6,792.53 km) |
| Swansea to Leyland | 4,034.46 mi (6,492.83 km) |
| Swansea to Leyton | 4,198.20 mi (6,756.36 km) |
| Swansea to Lichfield | 4,095.70 mi (6,591.40 km) |
| Swansea to Lincoln | 4,128.55 mi (6,644.26 km) |
| Swansea to Linlithgow | 3,940.40 mi (6,341.46 km) |
