| Sierre to La Union | 738.26 mi (1,188.11 km) |
| Sierre to La Victoria de Acentejo | 1,792.30 mi (2,884.43 km) |
| Sierre to Laguna de Duero | 690.04 mi (1,110.51 km) |
| Sierre to Lalin | 810.14 mi (1,303.79 km) |
| Sierre to Lardero | 561.00 mi (902.84 km) |
| Sierre to Laredo | 571.27 mi (919.37 km) |
| Sierre to Las Cabezas de San Juan | 945.50 mi (1,521.63 km) |
| Sierre to Las Palmas | 1,768.80 mi (2,846.61 km) |
| Sierre to Las Rozas de Madrid | 698.18 mi (1,123.61 km) |
| Sierre to Las Torres de Cotillas | 726.25 mi (1,168.79 km) |
| Sierre to Lebrija | 953.82 mi (1,535.02 km) |
| Sierre to Leganes | 700.91 mi (1,128.00 km) |
| Sierre to Leon | 693.80 mi (1,116.56 km) |
| Sierre to Lepe | 980.67 mi (1,578.23 km) |
| Sierre to Linares | 804.15 mi (1,294.16 km) |
