| Porsgrunn to Mitchell (South Dakota) | 4,235.55 mi (6,816.46 km) |
| Porsgrunn to Mitchellville (Maryland) | 3,848.42 mi (6,193.43 km) |
| Porsgrunn to Moberly (Missouri) | 4,319.45 mi (6,951.48 km) |
| Porsgrunn to Mobile (Alabama) | 4,684.89 mi (7,539.60 km) |
| Porsgrunn to Modesto (California) | 5,181.51 mi (8,338.83 km) |
| Porsgrunn to Mokena (Illinois) | 4,061.47 mi (6,536.30 km) |
| Porsgrunn to Moline (Illinois) | 4,143.99 mi (6,669.11 km) |
| Porsgrunn to Moncks Corner (South Carolina) | 4,273.89 mi (6,878.16 km) |
| Porsgrunn to Monfort Heights (Ohio) | 4,089.36 mi (6,581.20 km) |
| Porsgrunn to Monmouth (Oregon) | 4,771.72 mi (7,679.34 km) |
| Porsgrunn to Monroe (Georgia) | 4,362.11 mi (7,020.14 km) |
| Porsgrunn to Monroe (Louisiana) | 4,705.51 mi (7,572.79 km) |
| Porsgrunn to Monroe (Michigan) | 3,900.21 mi (6,276.78 km) |
| Porsgrunn to Monroe (North Carolina) | 4,189.59 mi (6,742.50 km) |
| Porsgrunn to Monroe (Ohio) | 4,067.06 mi (6,545.30 km) |
