| Watford to Karahalli | 1,709.68 mi (2,751.47 km) |
| Watford to Karakocan | 2,117.66 mi (3,408.04 km) |
| Watford to Karakopru | 2,142.30 mi (3,447.70 km) |
| Watford to Karaman | 1,912.00 mi (3,077.06 km) |
| Watford to Karapinar | 1,901.02 mi (3,059.40 km) |
| Watford to Karatas | 2,029.19 mi (3,265.67 km) |
| Watford to Karatepe | 1,620.22 mi (2,607.49 km) |
| Watford to Karayilan | 2,057.17 mi (3,310.69 km) |
| Watford to Kargipinar | 1,984.88 mi (3,194.36 km) |
| Watford to Karkamis | 2,125.05 mi (3,419.93 km) |
| Watford to Karliova | 2,144.61 mi (3,451.42 km) |
| Watford to Kars | 2,179.99 mi (3,508.36 km) |
| Watford to Kartal | 1,581.67 mi (2,545.45 km) |
| Watford to Kas | 1,815.83 mi (2,922.30 km) |
| Watford to Kastamonu | 1,752.72 mi (2,820.73 km) |
