| Porsgrunn to Manor (Texas) | 5,001.84 mi (8,049.68 km) |
| Porsgrunn to Manorville (New York) | 3,610.79 mi (5,811.01 km) |
| Porsgrunn to Mansfield (Ohio) | 3,935.67 mi (6,333.85 km) |
| Porsgrunn to Mansfield (Texas) | 4,858.81 mi (7,819.50 km) |
| Porsgrunn to Manteca (California) | 5,176.61 mi (8,330.94 km) |
| Porsgrunn to Manville (New Jersey) | 3,687.80 mi (5,934.95 km) |
| Porsgrunn to Maple Grove (Minnesota) | 4,028.30 mi (6,482.92 km) |
| Porsgrunn to Maple Heights (Ohio) | 3,869.68 mi (6,227.65 km) |
| Porsgrunn to Maple Valley (Washington) | 4,589.81 mi (7,386.58 km) |
| Porsgrunn to Mapleton (Utah) | 4,806.37 mi (7,735.10 km) |
| Porsgrunn to Maplewood (Minnesota) | 4,022.69 mi (6,473.89 km) |
| Porsgrunn to Marana (Arizona) | 5,266.93 mi (8,476.30 km) |
| Porsgrunn to Marco Island (Florida) | 4,743.71 mi (7,634.27 km) |
| Porsgrunn to Margate (Florida) | 4,674.62 mi (7,523.08 km) |
| Porsgrunn to Maricopa (Arizona) | 5,251.81 mi (8,451.98 km) |
