| Castaic to Juprelle | 5,641.89 mi (9,079.74 km) |
| Castaic to Jurbise | 5,602.15 mi (9,015.78 km) |
| Castaic to Kalmthout | 5,576.57 mi (8,974.63 km) |
| Castaic to Kampenhout | 5,600.92 mi (9,013.81 km) |
| Castaic to Kapelle-op-den-Bos | 5,591.64 mi (8,998.87 km) |
| Castaic to Kapellen | 5,578.85 mi (8,978.30 km) |
| Castaic to Kasterlee | 5,597.73 mi (9,008.68 km) |
| Castaic to Keerbergen | 5,600.34 mi (9,012.88 km) |
| Castaic to Kinrooi | 5,626.64 mi (9,055.20 km) |
| Castaic to Knokke-Heist | 5,542.75 mi (8,920.20 km) |
| Castaic to Koekelare | 5,545.50 mi (8,924.62 km) |
| Castaic to Koekelberg | 5,598.02 mi (9,009.14 km) |
| Castaic to Koksijde | 5,534.81 mi (8,907.42 km) |
| Castaic to Kontich | 5,588.41 mi (8,993.68 km) |
| Castaic to Kortemark | 5,550.49 mi (8,932.65 km) |
