| Porsgrunn to Manassas (Virginia) | 3,880.90 mi (6,245.71 km) |
| Porsgrunn to Manassas Park (Virginia) | 3,878.29 mi (6,241.51 km) |
| Porsgrunn to Manatí (Puerto Rico) | 4,643.05 mi (7,472.27 km) |
| Porsgrunn to Manchester (Missouri) | 4,308.06 mi (6,933.16 km) |
| Porsgrunn to Manchester (New Hampshire) | 3,454.25 mi (5,559.08 km) |
| Porsgrunn to Manchester (Tennessee) | 4,345.05 mi (6,992.68 km) |
| Porsgrunn to Manchester (Virginia) | 3,951.38 mi (6,359.13 km) |
| Porsgrunn to Mandan (North Dakota) | 4,134.83 mi (6,654.36 km) |
| Porsgrunn to Mandeville (Louisiana) | 4,766.54 mi (7,671.01 km) |
| Porsgrunn to Mango (Florida) | 4,645.99 mi (7,476.99 km) |
| Porsgrunn to Manhattan (Kansas) | 4,456.49 mi (7,172.03 km) |
| Porsgrunn to Manhattan (New York) | 3,654.13 mi (5,880.75 km) |
| Porsgrunn to Manhattan Beach (California) | 5,358.27 mi (8,623.30 km) |
| Porsgrunn to Manitowoc (Wisconsin) | 3,913.89 mi (6,298.79 km) |
| Porsgrunn to Mankato (Minnesota) | 4,095.65 mi (6,591.31 km) |
