| Oulu to Novi di Modena | 1,497.05 mi (2,409.26 km) |
| Oulu to Novi Ligure | 1,537.42 mi (2,474.24 km) |
| Oulu to Nuoro | 1,822.97 mi (2,933.79 km) |
| Oulu to Occhiobello | 1,485.78 mi (2,391.14 km) |
| Oulu to Oderzo | 1,416.57 mi (2,279.74 km) |
| Oulu to Oggiono | 1,461.59 mi (2,352.21 km) |
| Oulu to Olbia | 1,780.68 mi (2,865.73 km) |
| Oulu to Oleggio | 1,484.95 mi (2,389.79 km) |
| Oulu to Olgiate Comasco | 1,467.65 mi (2,361.96 km) |
| Oulu to Olgiate Olona | 1,478.76 mi (2,379.84 km) |
| Oulu to Omegna | 1,470.55 mi (2,366.62 km) |
| Oulu to Opera | 1,489.83 mi (2,397.65 km) |
| Oulu to Oppeano | 1,466.18 mi (2,359.59 km) |
| Oulu to Orbassano | 1,541.51 mi (2,480.83 km) |
| Oulu to Orbetello | 1,656.00 mi (2,665.08 km) |
