| Dumbarton to Isny im Allgau | 842.28 mi (1,355.52 km) |
| Dumbarton to Isselburg | 530.81 mi (854.26 km) |
| Dumbarton to Issum | 541.76 mi (871.87 km) |
| Dumbarton to Itzehoe | 575.11 mi (925.56 km) |
| Dumbarton to Jena | 747.46 mi (1,202.92 km) |
| Dumbarton to Jever | 522.56 mi (840.98 km) |
| Dumbarton to Jork | 591.07 mi (951.24 km) |
| Dumbarton to Juchen | 563.65 mi (907.11 km) |
| Dumbarton to Julich | 567.14 mi (912.73 km) |
| Dumbarton to Juterbog | 764.60 mi (1,230.51 km) |
| Dumbarton to Kaarst | 562.28 mi (904.91 km) |
| Dumbarton to Kaiserslautern | 682.93 mi (1,099.08 km) |
| Dumbarton to Kalkar | 528.81 mi (851.04 km) |
| Dumbarton to Kall | 590.75 mi (950.73 km) |
| Dumbarton to Kaltenkirchen | 594.12 mi (956.14 km) |
