| Gretz-Armainvilliers to Juprelle | 185.07 mi (297.84 km) |
| Gretz-Armainvilliers to Jurbise | 134.95 mi (217.18 km) |
| Gretz-Armainvilliers to Kalmthout | 198.06 mi (318.74 km) |
| Gretz-Armainvilliers to Kampenhout | 172.19 mi (277.11 km) |
| Gretz-Armainvilliers to Kapelle-op-den-Bos | 173.21 mi (278.75 km) |
| Gretz-Armainvilliers to Kapellen | 193.26 mi (311.03 km) |
| Gretz-Armainvilliers to Kasterlee | 199.32 mi (320.77 km) |
| Gretz-Armainvilliers to Keerbergen | 177.64 mi (285.88 km) |
| Gretz-Armainvilliers to Kinrooi | 213.16 mi (343.05 km) |
| Gretz-Armainvilliers to Knokke-Heist | 181.33 mi (291.82 km) |
| Gretz-Armainvilliers to Koekelare | 162.70 mi (261.85 km) |
| Gretz-Armainvilliers to Koekelberg | 163.25 mi (262.73 km) |
| Gretz-Armainvilliers to Koksijde | 163.03 mi (262.37 km) |
| Gretz-Armainvilliers to Kontich | 182.03 mi (292.96 km) |
| Gretz-Armainvilliers to Kortemark | 158.65 mi (255.33 km) |
