| Porsgrunn to Manilva | 1,708.44 mi (2,749.47 km) |
| Porsgrunn to Manises | 1,427.86 mi (2,297.92 km) |
| Porsgrunn to Manlleu | 1,224.88 mi (1,971.26 km) |
| Porsgrunn to Manresa | 1,248.51 mi (2,009.29 km) |
| Porsgrunn to Manzanares | 1,504.76 mi (2,421.68 km) |
| Porsgrunn to Manzanares el Real | 1,400.42 mi (2,253.77 km) |
| Porsgrunn to Maracena | 1,627.29 mi (2,618.87 km) |
| Porsgrunn to Marbella | 1,693.29 mi (2,725.08 km) |
| Porsgrunn to Marchena | 1,649.33 mi (2,654.33 km) |
| Porsgrunn to Marin | 1,397.79 mi (2,249.53 km) |
| Porsgrunn to Marratxi | 1,379.63 mi (2,220.31 km) |
| Porsgrunn to Martorell | 1,264.31 mi (2,034.71 km) |
| Porsgrunn to Martos | 1,598.80 mi (2,573.02 km) |
| Porsgrunn to Masamagrell | 1,420.41 mi (2,285.93 km) |
| Porsgrunn to Masanasa | 1,432.17 mi (2,304.86 km) |
