| Oulu to Grevena | 1,729.98 mi (2,784.14 km) |
| Oulu to Ialysos | 1,978.96 mi (3,184.83 km) |
| Oulu to Ilion | 1,865.59 mi (3,002.37 km) |
| Oulu to Ilioupoli | 1,872.42 mi (3,013.36 km) |
| Oulu to Ioannina | 1,761.30 mi (2,834.54 km) |
| Oulu to Irakleio | 2,050.32 mi (3,299.66 km) |
| Oulu to Irakleio | 1,864.33 mi (3,000.35 km) |
| Oulu to Kaisariani | 1,869.99 mi (3,009.45 km) |
| Oulu to Kalamaria | 1,690.98 mi (2,721.37 km) |
| Oulu to Kalamata | 1,937.87 mi (3,118.70 km) |
| Oulu to Kallithea | 1,871.34 mi (3,011.63 km) |
| Oulu to Kalymnos | 1,937.28 mi (3,117.74 km) |
| Oulu to Kalyvia Thorikou | 1,879.08 mi (3,024.09 km) |
| Oulu to Kamatero | 1,863.75 mi (2,999.41 km) |
| Oulu to Karditsa | 1,777.81 mi (2,861.11 km) |
