| Potomac to Prelouc | 4,332.67 mi (6,972.76 km) |
| Potomac to Prerov | 4,425.97 mi (7,122.92 km) |
| Potomac to Pribram | 4,283.80 mi (6,894.11 km) |
| Potomac to Prostejov | 4,412.21 mi (7,100.77 km) |
| Potomac to Rakovnik | 4,259.42 mi (6,854.88 km) |
| Potomac to Ricany | 4,299.06 mi (6,918.67 km) |
| Potomac to Rokycany | 4,265.70 mi (6,864.99 km) |
| Potomac to Roudnice nad Labem | 4,269.54 mi (6,871.16 km) |
| Potomac to Roznov pod Radhostem | 4,452.58 mi (7,165.73 km) |
| Potomac to Roztoky | 4,283.56 mi (6,893.72 km) |
| Potomac to Rumburk | 4,263.78 mi (6,861.89 km) |
| Potomac to Rychnov nad Kneznou | 4,356.11 mi (7,010.49 km) |
| Potomac to Slany | 4,269.10 mi (6,870.45 km) |
| Potomac to Sokolov | 4,214.06 mi (6,781.87 km) |
| Potomac to Sternberk | 4,410.47 mi (7,097.97 km) |
