| Duzce to Orthez | 1,635.25 mi (2,631.69 km) |
| Duzce to Orvault | 1,673.58 mi (2,693.36 km) |
| Duzce to Osny | 1,520.14 mi (2,446.43 km) |
| Duzce to Ostwald | 1,261.96 mi (2,030.93 km) |
| Duzce to Ouistreham | 1,626.03 mi (2,616.84 km) |
| Duzce to Oullins | 1,360.76 mi (2,189.94 km) |
| Duzce to Outreau | 1,565.30 mi (2,519.11 km) |
| Duzce to Oyonnax | 1,324.24 mi (2,131.16 km) |
| Duzce to Ozoir-la-Ferriere | 1,488.94 mi (2,396.22 km) |
| Duzce to Pace | 1,685.01 mi (2,711.77 km) |
| Duzce to Palaiseau | 1,507.59 mi (2,426.23 km) |
| Duzce to Pamiers | 1,517.85 mi (2,442.74 km) |
| Duzce to Panazol | 1,529.54 mi (2,461.55 km) |
| Duzce to Pantin | 1,502.92 mi (2,418.71 km) |
| Duzce to Paray-le-Monial | 1,398.57 mi (2,250.79 km) |
