| Castro Valley to Juprelle | 5,550.83 mi (8,933.19 km) |
| Castro Valley to Jurbise | 5,515.43 mi (8,876.23 km) |
| Castro Valley to Kalmthout | 5,485.78 mi (8,828.51 km) |
| Castro Valley to Kampenhout | 5,511.41 mi (8,869.76 km) |
| Castro Valley to Kapelle-op-den-Bos | 5,502.29 mi (8,855.09 km) |
| Castro Valley to Kapellen | 5,488.36 mi (8,832.66 km) |
| Castro Valley to Kasterlee | 5,506.27 mi (8,861.49 km) |
| Castro Valley to Keerbergen | 5,510.44 mi (8,868.19 km) |
| Castro Valley to Kinrooi | 5,533.70 mi (8,905.63 km) |
| Castro Valley to Knokke-Heist | 5,454.78 mi (8,778.62 km) |
| Castro Valley to Koekelare | 5,459.08 mi (8,785.54 km) |
| Castro Valley to Koekelberg | 5,509.25 mi (8,866.29 km) |
| Castro Valley to Koksijde | 5,449.12 mi (8,769.51 km) |
| Castro Valley to Kontich | 5,498.49 mi (8,848.96 km) |
| Castro Valley to Kortemark | 5,464.14 mi (8,793.68 km) |
