| Cities | Distance |
|---|---|
| Douai to Oria | 978.08 mi (1,574.07 km) |
| Douai to Oristano | 770.84 mi (1,240.55 km) |
| Douai to Orta Nova | 869.33 mi (1,399.04 km) |
| Douai to Orte | 702.64 mi (1,130.79 km) |
| Douai to Ortona | 771.99 mi (1,242.40 km) |
| Douai to Orvieto | 679.98 mi (1,094.32 km) |
| Douai to Orzinuovi | 467.40 mi (752.20 km) |
| Douai to Osimo | 682.52 mi (1,098.40 km) |
| Douai to Ospitaletto | 463.74 mi (746.31 km) |
| Douai to Ostuni | 964.23 mi (1,551.77 km) |
| Douai to Ottaviano | 856.07 mi (1,377.70 km) |
| Douai to Ovada | 473.36 mi (761.81 km) |
| Douai to Ozieri | 733.97 mi (1,181.21 km) |
| Douai to Paceco | 974.32 mi (1,568.01 km) |
| Douai to Pachino | 1,116.00 mi (1,796.03 km) |