| Formia to Illzach | 545.49 mi (877.89 km) |
| Formia to Ingre | 738.87 mi (1,189.10 km) |
| Formia to Irigny | 535.36 mi (861.58 km) |
| Formia to Isbergues | 838.01 mi (1,348.64 km) |
| Formia to Issoire | 597.82 mi (962.09 km) |
| Formia to Issoudun | 696.44 mi (1,120.81 km) |
| Formia to Issy-les-Moulineaux | 759.72 mi (1,222.66 km) |
| Formia to Istres | 466.58 mi (750.88 km) |
| Formia to Ivry-sur-Seine | 755.33 mi (1,215.59 km) |
| Formia to Jarville-la-Malgrange | 626.11 mi (1,007.63 km) |
| Formia to Jeumont | 772.81 mi (1,243.72 km) |
| Formia to Joigny | 682.92 mi (1,099.06 km) |
| Formia to Joinville-le-Pont | 752.49 mi (1,211.02 km) |
| Formia to Joue-les-Tours | 764.60 mi (1,230.51 km) |
| Formia to Jouy-le-Moutier | 776.03 mi (1,248.90 km) |
