| Harrow to Illzach | 432.41 mi (695.90 km) |
| Harrow to Ingre | 270.97 mi (436.09 km) |
| Harrow to Irigny | 471.41 mi (758.66 km) |
| Harrow to Isbergues | 138.52 mi (222.93 km) |
| Harrow to Issoire | 448.36 mi (721.56 km) |
| Harrow to Issoudun | 337.16 mi (542.61 km) |
| Harrow to Issy-les-Moulineaux | 223.00 mi (358.89 km) |
| Harrow to Istres | 610.09 mi (981.85 km) |
| Harrow to Ivry-sur-Seine | 226.39 mi (364.34 km) |
| Harrow to Jarville-la-Malgrange | 353.04 mi (568.16 km) |
| Harrow to Jeumont | 213.11 mi (342.97 km) |
| Harrow to Joigny | 299.59 mi (482.15 km) |
| Harrow to Joinville-le-Pont | 227.93 mi (366.81 km) |
| Harrow to Joue-les-Tours | 295.90 mi (476.20 km) |
| Harrow to Jouy-le-Moutier | 206.57 mi (332.44 km) |
