| Potomac to Radauti | 4,809.87 mi (7,740.73 km) |
| Potomac to Ramnicu Sarat | 4,955.23 mi (7,974.68 km) |
| Potomac to Ramnicu Valcea | 4,862.06 mi (7,824.73 km) |
| Potomac to Rasnov | 4,884.50 mi (7,860.85 km) |
| Potomac to Reghin | 4,807.25 mi (7,736.52 km) |
| Potomac to Resita | 4,755.50 mi (7,653.24 km) |
| Potomac to Roman | 4,885.42 mi (7,862.32 km) |
| Potomac to Rosiori de Vede | 4,927.27 mi (7,929.68 km) |
| Potomac to Rovinari | 4,821.73 mi (7,759.82 km) |
| Potomac to Roznov | 4,873.54 mi (7,843.21 km) |
| Potomac to Sabaoani | 4,878.80 mi (7,851.67 km) |
| Potomac to Sacele | 4,893.08 mi (7,874.65 km) |
| Potomac to Sacueni | 4,683.46 mi (7,537.30 km) |
| Potomac to Salcea | 4,834.62 mi (7,780.57 km) |
| Potomac to Salonta | 4,687.62 mi (7,544.00 km) |
