| Cascais to Illzach | 1,047.84 mi (1,686.34 km) |
| Cascais to Ingre | 849.85 mi (1,367.70 km) |
| Cascais to Irigny | 871.80 mi (1,403.02 km) |
| Cascais to Isbergues | 1,006.83 mi (1,620.34 km) |
| Cascais to Issoire | 801.52 mi (1,289.91 km) |
| Cascais to Issoudun | 810.26 mi (1,303.99 km) |
| Cascais to Issy-les-Moulineaux | 908.57 mi (1,462.20 km) |
| Cascais to Istres | 819.02 mi (1,318.09 km) |
| Cascais to Ivry-sur-Seine | 911.09 mi (1,466.25 km) |
| Cascais to Jarville-la-Malgrange | 1,037.42 mi (1,669.56 km) |
| Cascais to Jeumont | 1,038.59 mi (1,671.45 km) |
| Cascais to Joigny | 906.52 mi (1,458.90 km) |
| Cascais to Joinville-le-Pont | 914.89 mi (1,472.37 km) |
| Cascais to Joue-les-Tours | 783.84 mi (1,261.47 km) |
| Cascais to Jouy-le-Moutier | 910.72 mi (1,465.67 km) |
