| Cities | Distance |
|---|---|
| Duffel to Oria | 964.33 mi (1,551.94 km) |
| Duffel to Oristano | 797.90 mi (1,284.09 km) |
| Duffel to Orta Nova | 859.43 mi (1,383.11 km) |
| Duffel to Orte | 702.64 mi (1,130.80 km) |
| Duffel to Ortona | 763.20 mi (1,228.24 km) |
| Duffel to Orvieto | 680.25 mi (1,094.75 km) |
| Duffel to Orzinuovi | 465.77 mi (749.58 km) |
| Duffel to Osimo | 672.43 mi (1,082.16 km) |
| Duffel to Ospitaletto | 460.06 mi (740.39 km) |
| Duffel to Ostuni | 949.81 mi (1,528.57 km) |
| Duffel to Ottaviano | 852.91 mi (1,372.62 km) |
| Duffel to Ovada | 485.51 mi (781.35 km) |
| Duffel to Ozieri | 757.57 mi (1,219.19 km) |
| Duffel to Paceco | 987.44 mi (1,589.13 km) |
| Duffel to Pachino | 1,122.16 mi (1,805.94 km) |