| Porsgrunn to Mountain Brook (Alabama) | 4,478.81 mi (7,207.94 km) |
| Porsgrunn to Mountain Home (Arkansas) | 4,494.39 mi (7,233.02 km) |
| Porsgrunn to Mountain Home (Idaho) | 4,719.24 mi (7,594.88 km) |
| Porsgrunn to Mountain House (California) | 5,185.18 mi (8,344.74 km) |
| Porsgrunn to Mountain Park (Georgia) | 4,373.14 mi (7,037.89 km) |
| Porsgrunn to Mountain Top (Pennsylvania) | 3,699.94 mi (5,954.47 km) |
| Porsgrunn to Mountain View (California) | 5,220.10 mi (8,400.93 km) |
| Porsgrunn to Mountlake Terrace (Washington) | 4,568.32 mi (7,352.00 km) |
| Porsgrunn to Mukilteo (Washington) | 4,560.86 mi (7,339.99 km) |
| Porsgrunn to Muncie (Indiana) | 4,058.02 mi (6,530.75 km) |
| Porsgrunn to Mundelein (Illinois) | 4,024.68 mi (6,477.09 km) |
| Porsgrunn to Munhall (Pennsylvania) | 3,871.09 mi (6,229.91 km) |
| Porsgrunn to Munster (Indiana) | 4,049.16 mi (6,516.49 km) |
| Porsgrunn to Murfreesboro (Tennessee) | 4,333.99 mi (6,974.89 km) |
| Porsgrunn to Murphy (Texas) | 4,816.81 mi (7,751.91 km) |
