| Falls Church to Orthez | 3,842.49 mi (6,183.89 km) |
| Falls Church to Orvault | 3,705.90 mi (5,964.08 km) |
| Falls Church to Osny | 3,820.05 mi (6,147.77 km) |
| Falls Church to Ostwald | 4,070.04 mi (6,550.09 km) |
| Falls Church to Ouistreham | 3,716.63 mi (5,981.34 km) |
| Falls Church to Oullins | 4,029.44 mi (6,484.76 km) |
| Falls Church to Outreau | 3,760.12 mi (6,051.33 km) |
| Falls Church to Oyonnax | 4,050.37 mi (6,518.45 km) |
| Falls Church to Ozoir-la-Ferriere | 3,853.29 mi (6,201.28 km) |
| Falls Church to Pace | 3,678.35 mi (5,919.73 km) |
| Falls Church to Palaiseau | 3,836.58 mi (6,174.38 km) |
| Falls Church to Pamiers | 3,962.23 mi (6,376.59 km) |
| Falls Church to Panazol | 3,872.07 mi (6,231.49 km) |
| Falls Church to Pantin | 3,838.49 mi (6,177.46 km) |
| Falls Church to Paray-le-Monial | 3,978.21 mi (6,402.30 km) |
