| Potomac to Recica | 4,434.69 mi (7,136.94 km) |
| Potomac to Ribnica | 4,447.23 mi (7,157.13 km) |
| Potomac to Ribnica | 4,441.64 mi (7,148.12 km) |
| Potomac to Rogaska Slatina | 4,467.37 mi (7,189.53 km) |
| Potomac to Rogasovci | 4,463.23 mi (7,182.87 km) |
| Potomac to Rogatec | 4,470.37 mi (7,194.37 km) |
| Potomac to Ruse | 4,451.49 mi (7,163.99 km) |
| Potomac to Salovci | 4,473.23 mi (7,198.97 km) |
| Potomac to Selnica ob Dravi | 4,450.20 mi (7,161.90 km) |
| Potomac to Semic | 4,468.82 mi (7,191.86 km) |
| Potomac to Sempeter pri Gorici | 4,395.21 mi (7,073.40 km) |
| Potomac to Sencur | 4,416.72 mi (7,108.03 km) |
| Potomac to Sentilj | 4,451.87 mi (7,164.60 km) |
| Potomac to Sentjernej | 4,468.83 mi (7,191.88 km) |
| Potomac to Sentjur | 4,457.91 mi (7,174.32 km) |
