| Castle Rock to Isny im Allgau | 5,217.46 mi (8,396.69 km) |
| Castle Rock to Isselburg | 4,907.55 mi (7,897.93 km) |
| Castle Rock to Issum | 4,919.32 mi (7,916.89 km) |
| Castle Rock to Itzehoe | 4,908.24 mi (7,899.04 km) |
| Castle Rock to Jena | 5,113.13 mi (8,228.78 km) |
| Castle Rock to Jever | 4,874.73 mi (7,845.12 km) |
| Castle Rock to Jork | 4,931.31 mi (7,936.18 km) |
| Castle Rock to Juchen | 4,941.55 mi (7,952.65 km) |
| Castle Rock to Julich | 4,944.86 mi (7,957.98 km) |
| Castle Rock to Juterbog | 5,107.45 mi (8,219.65 km) |
| Castle Rock to Kaarst | 4,940.13 mi (7,950.36 km) |
| Castle Rock to Kaiserslautern | 5,059.05 mi (8,141.75 km) |
| Castle Rock to Kalkar | 4,906.09 mi (7,895.58 km) |
| Castle Rock to Kall | 4,967.98 mi (7,995.19 km) |
| Castle Rock to Kaltenkirchen | 4,925.61 mi (7,927.00 km) |
