| Herndon to Orthez | 3,849.15 mi (6,194.61 km) |
| Herndon to Orvault | 3,711.78 mi (5,973.53 km) |
| Herndon to Osny | 3,825.29 mi (6,156.21 km) |
| Herndon to Ostwald | 4,075.04 mi (6,558.14 km) |
| Herndon to Ouistreham | 3,721.96 mi (5,989.91 km) |
| Herndon to Oullins | 4,035.25 mi (6,494.10 km) |
| Herndon to Outreau | 3,765.01 mi (6,059.19 km) |
| Herndon to Oyonnax | 4,056.01 mi (6,527.51 km) |
| Herndon to Ozoir-la-Ferriere | 3,858.57 mi (6,209.76 km) |
| Herndon to Pace | 3,684.03 mi (5,928.87 km) |
| Herndon to Palaiseau | 3,841.90 mi (6,182.93 km) |
| Herndon to Pamiers | 3,968.80 mi (6,387.17 km) |
| Herndon to Panazol | 3,878.08 mi (6,241.17 km) |
| Herndon to Pantin | 3,843.75 mi (6,185.92 km) |
| Herndon to Paray-le-Monial | 3,983.90 mi (6,411.47 km) |
