| Kajaani to Oestrich-Winkel | 1,219.53 mi (1,962.64 km) |
| Kajaani to Offenburg | 1,314.59 mi (2,115.63 km) |
| Kajaani to Oftersheim | 1,245.52 mi (2,004.47 km) |
| Kajaani to Ohrdruf | 1,112.34 mi (1,790.14 km) |
| Kajaani to Ohringen | 1,237.42 mi (1,991.44 km) |
| Kajaani to Olbernhau | 1,073.37 mi (1,727.43 km) |
| Kajaani to Olching | 1,265.76 mi (2,037.04 km) |
| Kajaani to Oldenburg | 1,029.58 mi (1,656.95 km) |
| Kajaani to Oldenburg in Holstein | 902.22 mi (1,451.98 km) |
| Kajaani to Olfen | 1,131.17 mi (1,820.45 km) |
| Kajaani to Olpe | 1,162.22 mi (1,870.42 km) |
| Kajaani to Olsberg | 1,128.05 mi (1,815.42 km) |
| Kajaani to Oranienburg | 944.98 mi (1,520.79 km) |
| Kajaani to Ortenberg | 1,175.56 mi (1,891.87 km) |
| Kajaani to Oschatz | 1,037.57 mi (1,669.81 km) |
