| Hertford to Illzach | 431.65 mi (694.67 km) |
| Hertford to Ingre | 280.86 mi (451.99 km) |
| Hertford to Irigny | 478.14 mi (769.49 km) |
| Hertford to Isbergues | 136.38 mi (219.48 km) |
| Hertford to Issoire | 457.76 mi (736.69 km) |
| Hertford to Issoudun | 347.67 mi (559.52 km) |
| Hertford to Issy-les-Moulineaux | 230.00 mi (370.15 km) |
| Hertford to Istres | 618.51 mi (995.39 km) |
| Hertford to Ivry-sur-Seine | 233.11 mi (375.16 km) |
| Hertford to Jarville-la-Malgrange | 351.65 mi (565.93 km) |
| Hertford to Jeumont | 209.06 mi (336.44 km) |
| Hertford to Joigny | 305.50 mi (491.66 km) |
| Hertford to Joinville-le-Pont | 234.32 mi (377.10 km) |
| Hertford to Joue-les-Tours | 308.91 mi (497.15 km) |
| Hertford to Jouy-le-Moutier | 213.83 mi (344.12 km) |
