| Castle Pines to Isny im Allgau | 5,213.41 mi (8,390.18 km) |
| Castle Pines to Isselburg | 4,903.38 mi (7,891.22 km) |
| Castle Pines to Issum | 4,915.17 mi (7,910.21 km) |
| Castle Pines to Itzehoe | 4,903.85 mi (7,891.98 km) |
| Castle Pines to Jena | 5,108.84 mi (8,221.89 km) |
| Castle Pines to Jever | 4,870.41 mi (7,838.17 km) |
| Castle Pines to Jork | 4,926.94 mi (7,929.15 km) |
| Castle Pines to Juchen | 4,937.42 mi (7,946.01 km) |
| Castle Pines to Julich | 4,940.75 mi (7,951.36 km) |
| Castle Pines to Juterbog | 5,103.06 mi (8,212.58 km) |
| Castle Pines to Kaarst | 4,935.99 mi (7,943.71 km) |
| Castle Pines to Kaiserslautern | 5,054.98 mi (8,135.21 km) |
| Castle Pines to Kalkar | 4,901.93 mi (7,888.89 km) |
| Castle Pines to Kall | 4,963.89 mi (7,988.60 km) |
| Castle Pines to Kaltenkirchen | 4,921.21 mi (7,919.93 km) |
