| Porsgrunn to Mendota Heights (Minnesota) | 4,031.75 mi (6,488.47 km) |
| Porsgrunn to Menifee (California) | 5,341.70 mi (8,596.64 km) |
| Porsgrunn to Menlo Park (California) | 5,217.65 mi (8,397.00 km) |
| Porsgrunn to Menomonee Falls (Wisconsin) | 3,979.51 mi (6,404.40 km) |
| Porsgrunn to Menomonie (Wisconsin) | 3,995.68 mi (6,430.43 km) |
| Porsgrunn to Mentor (Ohio) | 3,847.25 mi (6,191.56 km) |
| Porsgrunn to Mequon (Wisconsin) | 3,970.52 mi (6,389.94 km) |
| Porsgrunn to Merced (California) | 5,190.84 mi (8,353.85 km) |
| Porsgrunn to Mercedes (Texas) | 5,263.90 mi (8,471.42 km) |
| Porsgrunn to Mercer Island (Washington) | 4,581.04 mi (7,372.48 km) |
| Porsgrunn to Mercerville (New Jersey) | 3,707.56 mi (5,966.74 km) |
| Porsgrunn to Meriden (Connecticut) | 3,575.05 mi (5,753.49 km) |
| Porsgrunn to Meridian (Idaho) | 4,705.44 mi (7,572.67 km) |
| Porsgrunn to Meridian (Mississippi) | 4,605.12 mi (7,411.23 km) |
| Porsgrunn to Merriam (Kansas) | 4,409.94 mi (7,097.12 km) |
