| Castel Gandolfo to Illzach | 491.24 mi (790.57 km) |
| Castel Gandolfo to Ingre | 679.65 mi (1,093.79 km) |
| Castel Gandolfo to Irigny | 475.56 mi (765.34 km) |
| Castel Gandolfo to Isbergues | 782.06 mi (1,258.61 km) |
| Castel Gandolfo to Issoire | 537.88 mi (865.64 km) |
| Castel Gandolfo to Issoudun | 636.68 mi (1,024.64 km) |
| Castel Gandolfo to Issy-les-Moulineaux | 701.53 mi (1,129.00 km) |
| Castel Gandolfo to Istres | 408.04 mi (656.68 km) |
| Castel Gandolfo to Ivry-sur-Seine | 697.18 mi (1,122.00 km) |
| Castel Gandolfo to Jarville-la-Malgrange | 571.56 mi (919.84 km) |
| Castel Gandolfo to Jeumont | 718.05 mi (1,155.59 km) |
| Castel Gandolfo to Joigny | 624.49 mi (1,005.01 km) |
| Castel Gandolfo to Joinville-le-Pont | 694.41 mi (1,117.54 km) |
| Castel Gandolfo to Joue-les-Tours | 704.80 mi (1,134.27 km) |
| Castel Gandolfo to Jouy-le-Moutier | 717.89 mi (1,155.34 km) |
