| Estoril to Illzach | 1,046.91 mi (1,684.84 km) |
| Estoril to Ingre | 849.01 mi (1,366.36 km) |
| Estoril to Irigny | 870.84 mi (1,401.48 km) |
| Estoril to Isbergues | 1,006.07 mi (1,619.12 km) |
| Estoril to Issoire | 800.57 mi (1,288.39 km) |
| Estoril to Issoudun | 809.39 mi (1,302.58 km) |
| Estoril to Issy-les-Moulineaux | 907.75 mi (1,460.88 km) |
| Estoril to Istres | 818.01 mi (1,316.46 km) |
| Estoril to Ivry-sur-Seine | 910.27 mi (1,464.94 km) |
| Estoril to Jarville-la-Malgrange | 1,036.53 mi (1,668.13 km) |
| Estoril to Jeumont | 1,037.78 mi (1,670.15 km) |
| Estoril to Joigny | 905.65 mi (1,457.50 km) |
| Estoril to Joinville-le-Pont | 914.06 mi (1,471.04 km) |
| Estoril to Joue-les-Tours | 783.01 mi (1,260.13 km) |
| Estoril to Jouy-le-Moutier | 909.92 mi (1,464.37 km) |
