| Kalajoki to Oestrich-Winkel | 1,145.67 mi (1,843.78 km) |
| Kalajoki to Offenburg | 1,243.86 mi (2,001.80 km) |
| Kalajoki to Oftersheim | 1,174.81 mi (1,890.68 km) |
| Kalajoki to Ohrdruf | 1,045.10 mi (1,681.93 km) |
| Kalajoki to Ohringen | 1,169.91 mi (1,882.80 km) |
| Kalajoki to Olbernhau | 1,015.95 mi (1,635.01 km) |
| Kalajoki to Olching | 1,206.27 mi (1,941.31 km) |
| Kalajoki to Oldenburg | 948.14 mi (1,525.89 km) |
| Kalajoki to Oldenburg in Holstein | 825.29 mi (1,328.17 km) |
| Kalajoki to Olfen | 1,051.37 mi (1,692.02 km) |
| Kalajoki to Olpe | 1,085.46 mi (1,746.88 km) |
| Kalajoki to Olsberg | 1,052.34 mi (1,693.58 km) |
| Kalajoki to Oranienburg | 881.67 mi (1,418.91 km) |
| Kalajoki to Ortenberg | 1,104.04 mi (1,776.78 km) |
| Kalajoki to Oschatz | 977.73 mi (1,573.51 km) |
