| Porsgrunn to Los Palacios y Villafranca | 1,669.78 mi (2,687.26 km) |
| Porsgrunn to Luanco | 1,256.04 mi (2,021.40 km) |
| Porsgrunn to Lucena | 1,628.41 mi (2,620.68 km) |
| Porsgrunn to Lugo | 1,332.51 mi (2,144.47 km) |
| Porsgrunn to Lumbreras | 1,575.05 mi (2,534.81 km) |
| Porsgrunn to Madrid | 1,417.71 mi (2,281.59 km) |
| Porsgrunn to Madridejos | 1,476.68 mi (2,376.49 km) |
| Porsgrunn to Mahon | 1,349.61 mi (2,171.99 km) |
| Porsgrunn to Mairena del Alcor | 1,652.96 mi (2,660.18 km) |
| Porsgrunn to Mairena del Aljarafe | 1,661.35 mi (2,673.69 km) |
| Porsgrunn to Majadahonda | 1,417.12 mi (2,280.63 km) |
| Porsgrunn to Malaga | 1,672.03 mi (2,690.88 km) |
| Porsgrunn to Malgrat de Mar | 1,243.87 mi (2,001.81 km) |
| Porsgrunn to Manacor | 1,380.26 mi (2,221.32 km) |
| Porsgrunn to Mancha Real | 1,588.29 mi (2,556.11 km) |
