| Idanha-a-Nova to Imatra | 2,109.93 mi (3,395.60 km) |
| Idanha-a-Nova to Jakobstad | 2,041.69 mi (3,285.78 km) |
| Idanha-a-Nova to Jamsa | 2,031.81 mi (3,269.89 km) |
| Idanha-a-Nova to Janakkala | 1,981.44 mi (3,188.82 km) |
| Idanha-a-Nova to Jarvenpaa | 1,978.07 mi (3,183.39 km) |
| Idanha-a-Nova to Joensuu | 2,184.02 mi (3,514.84 km) |
| Idanha-a-Nova to Joutseno | 2,100.16 mi (3,379.88 km) |
| Idanha-a-Nova to Jyvaskyla | 2,061.10 mi (3,317.01 km) |
| Idanha-a-Nova to Jyvaskylan Maalaiskunta | 2,062.87 mi (3,319.87 km) |
| Idanha-a-Nova to Kaarina | 1,897.30 mi (3,053.41 km) |
| Idanha-a-Nova to Kajaani | 2,187.66 mi (3,520.69 km) |
| Idanha-a-Nova to Kalajoki | 2,097.18 mi (3,375.09 km) |
| Idanha-a-Nova to Kangasala | 1,985.87 mi (3,195.94 km) |
| Idanha-a-Nova to Kankaanpaa | 1,954.81 mi (3,145.96 km) |
| Idanha-a-Nova to Karhula | 2,033.82 mi (3,273.12 km) |
