| Potomac to Nymburk | 4,307.67 mi (6,932.53 km) |
| Potomac to Olomouc | 4,413.39 mi (7,102.66 km) |
| Potomac to Opava | 4,426.45 mi (7,123.69 km) |
| Potomac to Orlova | 4,449.84 mi (7,161.33 km) |
| Potomac to Ostrava | 4,444.92 mi (7,153.41 km) |
| Potomac to Ostrov | 4,221.83 mi (6,794.38 km) |
| Potomac to Otrokovice | 4,437.71 mi (7,141.80 km) |
| Potomac to Pardubice | 4,341.19 mi (6,986.47 km) |
| Potomac to Pelhrimov | 4,340.04 mi (6,984.62 km) |
| Potomac to Pisek | 4,301.77 mi (6,923.03 km) |
| Potomac to Plzen | 4,257.00 mi (6,850.97 km) |
| Potomac to Podebrady | 4,312.12 mi (6,939.68 km) |
| Potomac to Policka | 4,371.06 mi (7,034.54 km) |
| Potomac to Prachatice | 4,305.63 mi (6,929.24 km) |
| Potomac to Prague | 4,286.82 mi (6,898.97 km) |
