| South Portland to Juprelle | 3,436.33 mi (5,530.25 km) |
| South Portland to Jurbise | 3,376.56 mi (5,434.04 km) |
| South Portland to Kalmthout | 3,375.88 mi (5,432.96 km) |
| South Portland to Kampenhout | 3,390.74 mi (5,456.88 km) |
| South Portland to Kapelle-op-den-Bos | 3,381.41 mi (5,441.85 km) |
| South Portland to Kapellen | 3,376.27 mi (5,433.59 km) |
| South Portland to Kasterlee | 3,398.69 mi (5,469.66 km) |
| South Portland to Keerbergen | 3,392.40 mi (5,459.53 km) |
| South Portland to Kinrooi | 3,433.06 mi (5,524.98 km) |
| South Portland to Knokke-Heist | 3,329.65 mi (5,358.55 km) |
| South Portland to Koekelare | 3,323.60 mi (5,348.82 km) |
| South Portland to Koekelberg | 3,383.99 mi (5,446.00 km) |
| South Portland to Koksijde | 3,310.01 mi (5,326.95 km) |
| South Portland to Kontich | 3,381.71 mi (5,442.34 km) |
| South Portland to Kortemark | 3,327.76 mi (5,355.51 km) |
