| South Portland to Imatra | 3,914.62 mi (6,299.97 km) |
| South Portland to Jakobstad | 3,662.70 mi (5,894.54 km) |
| South Portland to Jamsa | 3,788.70 mi (6,097.33 km) |
| South Portland to Janakkala | 3,804.28 mi (6,122.40 km) |
| South Portland to Jarvenpaa | 3,832.04 mi (6,167.07 km) |
| South Portland to Joensuu | 3,891.42 mi (6,262.64 km) |
| South Portland to Joutseno | 3,909.20 mi (6,291.25 km) |
| South Portland to Jyvaskyla | 3,792.35 mi (6,103.20 km) |
| South Portland to Jyvaskylan Maalaiskunta | 3,790.80 mi (6,100.71 km) |
| South Portland to Kaarina | 3,752.49 mi (6,039.05 km) |
| South Portland to Kajaani | 3,780.89 mi (6,084.75 km) |
| South Portland to Kalajoki | 3,679.11 mi (5,920.95 km) |
| South Portland to Kangasala | 3,769.33 mi (6,066.15 km) |
| South Portland to Kankaanpaa | 3,710.08 mi (5,970.80 km) |
| South Portland to Karhula | 3,885.19 mi (6,252.62 km) |
