| Slough to Liria | 821.01 mi (1,321.28 km) |
| Slough to Llagostera | 688.63 mi (1,108.24 km) |
| Slough to Llanera | 608.70 mi (979.60 km) |
| Slough to Llanes | 591.46 mi (951.86 km) |
| Slough to Lleida | 685.88 mi (1,103.82 km) |
| Slough to Lloret de Mar | 696.68 mi (1,121.20 km) |
| Slough to Lluchmayor | 847.04 mi (1,363.19 km) |
| Slough to Loeches | 780.29 mi (1,255.76 km) |
| Slough to Logrono | 630.89 mi (1,015.31 km) |
| Slough to Loja | 1,006.11 mi (1,619.18 km) |
| Slough to Lora del Rio | 987.19 mi (1,588.72 km) |
| Slough to Lorca | 956.98 mi (1,540.12 km) |
| Slough to Los Alcazares | 951.14 mi (1,530.71 km) |
| Slough to Los Barrios | 1,085.97 mi (1,747.70 km) |
| Slough to Los Corrales de Buelna | 592.38 mi (953.34 km) |
