| Dumbarton to Illzach | 757.46 mi (1,219.02 km) |
| Dumbarton to Ingre | 617.36 mi (993.55 km) |
| Dumbarton to Irigny | 818.24 mi (1,316.82 km) |
| Dumbarton to Isbergues | 468.14 mi (753.40 km) |
| Dumbarton to Issoire | 794.85 mi (1,279.19 km) |
| Dumbarton to Issoudun | 682.38 mi (1,098.19 km) |
| Dumbarton to Issy-les-Moulineaux | 569.94 mi (917.23 km) |
| Dumbarton to Istres | 957.26 mi (1,540.56 km) |
| Dumbarton to Ivry-sur-Seine | 573.15 mi (922.39 km) |
| Dumbarton to Jarville-la-Malgrange | 676.82 mi (1,089.23 km) |
| Dumbarton to Jeumont | 530.14 mi (853.18 km) |
| Dumbarton to Joigny | 645.60 mi (1,039.00 km) |
| Dumbarton to Joinville-le-Pont | 574.42 mi (924.44 km) |
| Dumbarton to Joue-les-Tours | 634.54 mi (1,021.20 km) |
| Dumbarton to Jouy-le-Moutier | 553.63 mi (890.98 km) |
