| Oudenburg to Novi di Modena | 566.88 mi (912.31 km) |
| Oudenburg to Novi Ligure | 517.93 mi (833.53 km) |
| Oudenburg to Nuoro | 809.78 mi (1,303.21 km) |
| Oudenburg to Occhiobello | 585.96 mi (943.02 km) |
| Oudenburg to Oderzo | 572.22 mi (920.89 km) |
| Oudenburg to Oggiono | 472.68 mi (760.71 km) |
| Oudenburg to Olbia | 774.07 mi (1,245.74 km) |
| Oudenburg to Oleggio | 464.04 mi (746.80 km) |
| Oudenburg to Olgiate Comasco | 462.14 mi (743.74 km) |
| Oudenburg to Olgiate Olona | 468.56 mi (754.08 km) |
| Oudenburg to Omegna | 441.96 mi (711.26 km) |
| Oudenburg to Opera | 491.85 mi (791.55 km) |
| Oudenburg to Oppeano | 553.45 mi (890.69 km) |
| Oudenburg to Orbassano | 475.09 mi (764.58 km) |
| Oudenburg to Orbetello | 717.20 mi (1,154.22 km) |
