| Harrow on the Hill to Juprelle | 260.88 mi (419.85 km) |
| Harrow on the Hill to Jurbise | 198.51 mi (319.47 km) |
| Harrow on the Hill to Kalmthout | 206.89 mi (332.96 km) |
| Harrow on the Hill to Kampenhout | 215.45 mi (346.73 km) |
| Harrow on the Hill to Kapelle-op-den-Bos | 206.53 mi (332.37 km) |
| Harrow on the Hill to Kapellen | 205.94 mi (331.43 km) |
| Harrow on the Hill to Kasterlee | 228.67 mi (368.00 km) |
| Harrow on the Hill to Keerbergen | 217.96 mi (350.77 km) |
| Harrow on the Hill to Kinrooi | 263.57 mi (424.17 km) |
| Harrow on the Hill to Knokke-Heist | 156.59 mi (252.01 km) |
| Harrow on the Hill to Koekelare | 146.74 mi (236.15 km) |
| Harrow on the Hill to Koekelberg | 207.59 mi (334.09 km) |
| Harrow on the Hill to Koksijde | 132.71 mi (213.57 km) |
| Harrow on the Hill to Kontich | 208.50 mi (335.55 km) |
| Harrow on the Hill to Kortemark | 150.53 mi (242.25 km) |
