| Douglas to Isny im Allgau | 870.57 mi (1,401.05 km) |
| Douglas to Isselburg | 634.87 mi (1,021.73 km) |
| Douglas to Issum | 635.53 mi (1,022.79 km) |
| Douglas to Itzehoe | 759.30 mi (1,221.98 km) |
| Douglas to Jena | 862.78 mi (1,388.50 km) |
| Douglas to Jever | 692.00 mi (1,113.67 km) |
| Douglas to Jork | 764.94 mi (1,231.05 km) |
| Douglas to Juchen | 643.73 mi (1,035.99 km) |
| Douglas to Julich | 640.00 mi (1,029.98 km) |
| Douglas to Juterbog | 912.95 mi (1,469.25 km) |
| Douglas to Kaarst | 647.21 mi (1,041.59 km) |
| Douglas to Kaiserslautern | 727.70 mi (1,171.13 km) |
| Douglas to Kalkar | 628.20 mi (1,010.99 km) |
| Douglas to Kall | 653.85 mi (1,052.27 km) |
| Douglas to Kaltenkirchen | 777.05 mi (1,250.53 km) |
