| Boulder to Liria | 5,173.35 mi (8,325.70 km) |
| Boulder to Llagostera | 5,213.19 mi (8,389.82 km) |
| Boulder to Llanera | 4,792.61 mi (7,712.96 km) |
| Boulder to Llanes | 4,841.95 mi (7,792.36 km) |
| Boulder to Lleida | 5,134.37 mi (8,262.96 km) |
| Boulder to Lloret de Mar | 5,216.75 mi (8,395.55 km) |
| Boulder to Lluchmayor | 5,320.09 mi (8,561.86 km) |
| Boulder to Loeches | 5,025.18 mi (8,087.24 km) |
| Boulder to Logrono | 4,974.88 mi (8,006.30 km) |
| Boulder to Loja | 5,131.89 mi (8,258.97 km) |
| Boulder to Lora del Rio | 5,052.33 mi (8,130.94 km) |
| Boulder to Lorca | 5,213.90 mi (8,390.96 km) |
| Boulder to Los Alcazares | 5,246.47 mi (8,443.38 km) |
| Boulder to Los Barrios | 5,116.33 mi (8,233.94 km) |
| Boulder to Los Corrales de Buelna | 4,876.32 mi (7,847.69 km) |
