| Ostrov to Jakobstad | 990.95 mi (1,594.78 km) |
| Ostrov to Jamsa | 924.37 mi (1,487.63 km) |
| Ostrov to Janakkala | 861.05 mi (1,385.73 km) |
| Ostrov to Jarvenpaa | 846.26 mi (1,361.93 km) |
| Ostrov to Joensuu | 1,057.88 mi (1,702.50 km) |
| Ostrov to Joutseno | 956.97 mi (1,540.10 km) |
| Ostrov to Jyvaskyla | 955.96 mi (1,538.46 km) |
| Ostrov to Jyvaskylan Maalaiskunta | 958.59 mi (1,542.70 km) |
| Ostrov to Kaarina | 787.87 mi (1,267.96 km) |
| Ostrov to Kajaani | 1,103.16 mi (1,775.37 km) |
| Ostrov to Kalajoki | 1,045.07 mi (1,681.88 km) |
| Ostrov to Kangasala | 880.56 mi (1,417.13 km) |
| Ostrov to Kankaanpaa | 871.96 mi (1,403.28 km) |
| Ostrov to Karhula | 890.02 mi (1,432.35 km) |
| Ostrov to Karis | 794.12 mi (1,278.01 km) |
