| Dumbarton to Ilawa | 970.25 mi (1,561.47 km) |
| Dumbarton to Imielin | 1,059.91 mi (1,705.77 km) |
| Dumbarton to Inowroclaw | 939.63 mi (1,512.19 km) |
| Dumbarton to Janow Lubelski | 1,161.88 mi (1,869.86 km) |
| Dumbarton to Jarocin | 933.71 mi (1,502.66 km) |
| Dumbarton to Jaroslaw | 1,195.74 mi (1,924.36 km) |
| Dumbarton to Jasien | 915.58 mi (1,473.48 km) |
| Dumbarton to Jaslo | 1,159.31 mi (1,865.73 km) |
| Dumbarton to Jastrzebie-Zdroj | 1,042.72 mi (1,678.09 km) |
| Dumbarton to Jawor | 913.79 mi (1,470.60 km) |
| Dumbarton to Jaworzno | 1,059.38 mi (1,704.91 km) |
| Dumbarton to Jedrzejow | 1,083.59 mi (1,743.87 km) |
| Dumbarton to Jelcz-Laskowice | 957.19 mi (1,540.46 km) |
| Dumbarton to Jelenia Gora | 901.38 mi (1,450.64 km) |
| Dumbarton to Jozefoslaw | 1,066.26 mi (1,715.98 km) |
