| Castel Gandolfo to Juprelle | 706.23 mi (1,136.57 km) |
| Castel Gandolfo to Jurbise | 735.62 mi (1,183.87 km) |
| Castel Gandolfo to Kalmthout | 769.94 mi (1,239.09 km) |
| Castel Gandolfo to Kampenhout | 742.57 mi (1,195.05 km) |
| Castel Gandolfo to Kapelle-op-den-Bos | 751.37 mi (1,209.21 km) |
| Castel Gandolfo to Kapellen | 766.89 mi (1,234.20 km) |
| Castel Gandolfo to Kasterlee | 750.91 mi (1,208.48 km) |
| Castel Gandolfo to Keerbergen | 744.12 mi (1,197.54 km) |
| Castel Gandolfo to Kinrooi | 727.19 mi (1,170.30 km) |
| Castel Gandolfo to Knokke-Heist | 797.04 mi (1,282.72 km) |
| Castel Gandolfo to Koekelare | 791.65 mi (1,274.04 km) |
| Castel Gandolfo to Koekelberg | 743.72 mi (1,196.90 km) |
| Castel Gandolfo to Koksijde | 801.29 mi (1,289.55 km) |
| Castel Gandolfo to Kontich | 755.97 mi (1,216.62 km) |
| Castel Gandolfo to Kortemark | 786.57 mi (1,265.86 km) |
