| South Portland to Karlskoga | 3,535.91 mi (5,690.50 km) |
| South Portland to Karlskrona | 3,660.46 mi (5,890.94 km) |
| South Portland to Karlstad | 3,501.67 mi (5,635.40 km) |
| South Portland to Katrineholm | 3,599.78 mi (5,793.29 km) |
| South Portland to Kavlinge | 3,584.10 mi (5,768.05 km) |
| South Portland to Kinna | 3,522.26 mi (5,668.54 km) |
| South Portland to Kiruna | 3,488.27 mi (5,613.82 km) |
| South Portland to Klippansbruk | 3,576.39 mi (5,755.64 km) |
| South Portland to Koping | 3,578.55 mi (5,759.12 km) |
| South Portland to Kristianstad | 3,613.35 mi (5,815.12 km) |
| South Portland to Kristinehamn | 3,523.72 mi (5,670.88 km) |
| South Portland to Kumla | 3,561.79 mi (5,732.14 km) |
| South Portland to Kungalv | 3,488.67 mi (5,614.47 km) |
| South Portland to Kungsangen | 3,636.15 mi (5,851.82 km) |
| South Portland to Kungsbacka | 3,501.94 mi (5,635.83 km) |
