| Difficult Run to Leigh | 3,541.05 mi (5,698.77 km) |
| Difficult Run to Leigh-on-Sea | 3,708.50 mi (5,968.26 km) |
| Difficult Run to Leighton Buzzard | 3,646.92 mi (5,869.15 km) |
| Difficult Run to Leith | 3,473.07 mi (5,589.36 km) |
| Difficult Run to Lemington | 3,544.99 mi (5,705.12 km) |
| Difficult Run to Leominster | 3,556.30 mi (5,723.32 km) |
| Difficult Run to Lerwick | 3,484.14 mi (5,607.19 km) |
| Difficult Run to Letchworth | 3,663.07 mi (5,895.14 km) |
| Difficult Run to Leven | 3,476.28 mi (5,594.54 km) |
| Difficult Run to Lewes | 3,697.39 mi (5,950.38 km) |
| Difficult Run to Leyland | 3,530.27 mi (5,681.43 km) |
| Difficult Run to Leyton | 3,680.72 mi (5,923.54 km) |
| Difficult Run to Lichfield | 3,584.07 mi (5,768.00 km) |
| Difficult Run to Lincoln | 3,624.46 mi (5,833.01 km) |
| Difficult Run to Linlithgow | 3,456.49 mi (5,562.69 km) |
