| Port Laoise to Illzach | 738.05 mi (1,187.78 km) |
| Port Laoise to Ingre | 533.74 mi (858.97 km) |
| Port Laoise to Irigny | 743.94 mi (1,197.26 km) |
| Port Laoise to Isbergues | 448.19 mi (721.29 km) |
| Port Laoise to Issoire | 701.16 mi (1,128.41 km) |
| Port Laoise to Issoudun | 588.24 mi (946.68 km) |
| Port Laoise to Issy-les-Moulineaux | 507.48 mi (816.72 km) |
| Port Laoise to Istres | 864.60 mi (1,391.43 km) |
| Port Laoise to Ivry-sur-Seine | 511.91 mi (823.83 km) |
| Port Laoise to Jarville-la-Malgrange | 660.36 mi (1,062.74 km) |
| Port Laoise to Jeumont | 523.26 mi (842.11 km) |
| Port Laoise to Joigny | 584.39 mi (940.49 km) |
| Port Laoise to Joinville-le-Pont | 514.83 mi (828.54 km) |
| Port Laoise to Joue-les-Tours | 526.70 mi (847.64 km) |
| Port Laoise to Jouy-le-Moutier | 491.24 mi (790.57 km) |
