| Herndon to Nymburk | 4,317.24 mi (6,947.93 km) |
| Herndon to Olomouc | 4,422.94 mi (7,118.03 km) |
| Herndon to Opava | 4,435.96 mi (7,138.98 km) |
| Herndon to Orlova | 4,459.34 mi (7,176.61 km) |
| Herndon to Ostrava | 4,454.42 mi (7,168.70 km) |
| Herndon to Ostrov | 4,231.45 mi (6,809.86 km) |
| Herndon to Otrokovice | 4,447.29 mi (7,157.21 km) |
| Herndon to Pardubice | 4,350.75 mi (7,001.86 km) |
| Herndon to Pelhrimov | 4,349.67 mi (7,000.11 km) |
| Herndon to Pisek | 4,311.44 mi (6,938.59 km) |
| Herndon to Plzen | 4,266.65 mi (6,866.52 km) |
| Herndon to Podebrady | 4,321.69 mi (6,955.09 km) |
| Herndon to Policka | 4,380.63 mi (7,049.94 km) |
| Herndon to Prachatice | 4,315.33 mi (6,944.85 km) |
| Herndon to Prague | 4,296.42 mi (6,914.41 km) |
