| Watford to Imatra | 1,278.54 mi (2,057.61 km) |
| Watford to Jakobstad | 1,178.06 mi (1,895.90 km) |
| Watford to Jamsa | 1,185.59 mi (1,908.02 km) |
| Watford to Janakkala | 1,142.99 mi (1,839.47 km) |
| Watford to Jarvenpaa | 1,145.58 mi (1,843.64 km) |
| Watford to Joensuu | 1,340.73 mi (2,157.70 km) |
| Watford to Joutseno | 1,268.85 mi (2,042.01 km) |
| Watford to Jyvaskyla | 1,212.90 mi (1,951.97 km) |
| Watford to Jyvaskylan Maalaiskunta | 1,214.28 mi (1,954.19 km) |
| Watford to Kaarina | 1,057.86 mi (1,702.46 km) |
| Watford to Kajaani | 1,328.92 mi (2,138.70 km) |
| Watford to Kalajoki | 1,232.58 mi (1,983.65 km) |
| Watford to Kangasala | 1,140.58 mi (1,835.59 km) |
| Watford to Kankaanpaa | 1,102.55 mi (1,774.38 km) |
| Watford to Karhula | 1,205.67 mi (1,940.34 km) |
