| Portsmouth to Robertsville (New Jersey) | 3,464.70 mi (5,575.89 km) |
| Portsmouth to Robinson (Texas) | 4,812.56 mi (7,745.06 km) |
| Portsmouth to Robstown (Texas) | 5,023.39 mi (8,084.36 km) |
| Portsmouth to Rochester (Michigan) | 3,721.00 mi (5,988.37 km) |
| Portsmouth to Rochester (Minnesota) | 4,018.76 mi (6,467.58 km) |
| Portsmouth to Rochester (New Hampshire) | 3,205.89 mi (5,159.38 km) |
| Portsmouth to Rochester (New York) | 3,481.47 mi (5,602.89 km) |
| Portsmouth to Rochester Hills (Michigan) | 3,723.40 mi (5,992.24 km) |
| Portsmouth to Rock Hill (South Carolina) | 3,986.48 mi (6,415.62 km) |
| Portsmouth to Rock Island (Illinois) | 4,065.58 mi (6,542.93 km) |
| Portsmouth to Rock Springs (Wyoming) | 4,729.06 mi (7,610.69 km) |
| Portsmouth to Rockford (Illinois) | 3,970.99 mi (6,390.70 km) |
| Portsmouth to Rockledge (Florida) | 4,292.07 mi (6,907.42 km) |
| Portsmouth to Rocklin (California) | 5,265.97 mi (8,474.76 km) |
| Portsmouth to Rockport (Texas) | 4,987.16 mi (8,026.05 km) |
