| Portsmouth to Ridgeland (Mississippi) | 4,483.79 mi (7,215.97 km) |
| Portsmouth to Ridgewood (New Jersey) | 3,430.01 mi (5,520.06 km) |
| Portsmouth to Rifle (Colorado) | 4,788.45 mi (7,706.26 km) |
| Portsmouth to Rincon (Georgia) | 4,120.55 mi (6,631.39 km) |
| Portsmouth to Ringwood (New Jersey) | 3,431.48 mi (5,522.43 km) |
| Portsmouth to Río Grande (Puerto Rico) | 4,144.84 mi (6,670.48 km) |
| Portsmouth to Rio Grande City (Texas) | 5,143.61 mi (8,277.84 km) |
| Portsmouth to Rio Linda (California) | 5,278.66 mi (8,495.19 km) |
| Portsmouth to Rio Rancho (New Mexico) | 4,975.25 mi (8,006.89 km) |
| Portsmouth to Rio Rico (Arizona) | 5,334.34 mi (8,584.79 km) |
| Portsmouth to Ripon (California) | 5,323.29 mi (8,567.00 km) |
| Portsmouth to River Edge (New Jersey) | 3,429.27 mi (5,518.87 km) |
| Portsmouth to River Falls (Wisconsin) | 3,985.23 mi (6,413.61 km) |
| Portsmouth to River Forest (Illinois) | 3,939.73 mi (6,340.38 km) |
| Portsmouth to River Grove (Illinois) | 3,939.11 mi (6,339.39 km) |
