| Dayton to Orthez | 4,126.62 mi (6,641.16 km) |
| Dayton to Orvault | 3,972.49 mi (6,393.10 km) |
| Dayton to Osny | 4,071.34 mi (6,552.18 km) |
| Dayton to Ostwald | 4,314.50 mi (6,943.52 km) |
| Dayton to Ouistreham | 3,970.28 mi (6,389.55 km) |
| Dayton to Oullins | 4,293.35 mi (6,909.49 km) |
| Dayton to Outreau | 4,003.00 mi (6,442.21 km) |
| Dayton to Oyonnax | 4,310.12 mi (6,936.47 km) |
| Dayton to Ozoir-la-Ferriere | 4,105.11 mi (6,606.54 km) |
| Dayton to Pace | 3,940.47 mi (6,341.57 km) |
| Dayton to Palaiseau | 4,089.44 mi (6,581.32 km) |
| Dayton to Pamiers | 4,244.09 mi (6,830.20 km) |
| Dayton to Panazol | 4,141.36 mi (6,664.87 km) |
| Dayton to Pantin | 4,090.12 mi (6,582.41 km) |
| Dayton to Paray-le-Monial | 4,239.68 mi (6,823.11 km) |
