| Oulu to Oegstgeest | 1,153.90 mi (1,857.02 km) |
| Oulu to Oirschot | 1,176.23 mi (1,892.95 km) |
| Oulu to Oisterwijk | 1,173.39 mi (1,888.38 km) |
| Oulu to Oldebroek | 1,106.68 mi (1,781.03 km) |
| Oulu to Oldenzaal | 1,092.73 mi (1,758.57 km) |
| Oulu to Ommen | 1,091.63 mi (1,756.81 km) |
| Oulu to Oosterend | 1,070.37 mi (1,722.60 km) |
| Oulu to Oosterhout | 1,177.24 mi (1,894.59 km) |
| Oulu to Oosterwolde | 1,066.26 mi (1,715.97 km) |
| Oulu to Oostzaan | 1,129.94 mi (1,818.47 km) |
| Oulu to Opmeer | 1,112.84 mi (1,790.94 km) |
| Oulu to Oss | 1,155.62 mi (1,859.79 km) |
| Oulu to Oud-Beijerland | 1,176.98 mi (1,894.16 km) |
| Oulu to Oudenbosch | 1,187.72 mi (1,911.45 km) |
| Oulu to Oudewater | 1,154.86 mi (1,858.56 km) |
