| Willoughby to Isny im Allgau | 4,242.15 mi (6,827.08 km) |
| Willoughby to Isselburg | 3,962.15 mi (6,376.46 km) |
| Willoughby to Issum | 3,969.92 mi (6,388.97 km) |
| Willoughby to Itzehoe | 4,007.04 mi (6,448.71 km) |
| Willoughby to Jena | 4,185.27 mi (6,735.55 km) |
| Willoughby to Jever | 3,959.96 mi (6,372.94 km) |
| Willoughby to Jork | 4,025.82 mi (6,478.93 km) |
| Willoughby to Juchen | 3,987.01 mi (6,416.48 km) |
| Willoughby to Julich | 3,987.30 mi (6,416.94 km) |
| Willoughby to Juterbog | 4,201.81 mi (6,762.15 km) |
| Willoughby to Kaarst | 3,987.67 mi (6,417.54 km) |
| Willoughby to Kaiserslautern | 4,091.13 mi (6,584.04 km) |
| Willoughby to Kalkar | 3,958.55 mi (6,370.67 km) |
| Willoughby to Kall | 4,006.81 mi (6,448.34 km) |
| Willoughby to Kaltenkirchen | 4,025.75 mi (6,478.82 km) |
