| Northolt to Illzach | 431.82 mi (694.94 km) |
| Northolt to Ingre | 268.99 mi (432.89 km) |
| Northolt to Irigny | 469.79 mi (756.05 km) |
| Northolt to Isbergues | 138.27 mi (222.52 km) |
| Northolt to Issoire | 446.41 mi (718.42 km) |
| Northolt to Issoudun | 335.09 mi (539.27 km) |
| Northolt to Issy-les-Moulineaux | 221.40 mi (356.31 km) |
| Northolt to Istres | 608.25 mi (978.88 km) |
| Northolt to Ivry-sur-Seine | 224.82 mi (361.82 km) |
| Northolt to Jarville-la-Malgrange | 352.55 mi (567.37 km) |
| Northolt to Jeumont | 213.07 mi (342.90 km) |
| Northolt to Joigny | 298.11 mi (479.76 km) |
| Northolt to Joinville-le-Pont | 226.40 mi (364.36 km) |
| Northolt to Joue-les-Tours | 293.55 mi (472.42 km) |
| Northolt to Jouy-le-Moutier | 204.94 mi (329.81 km) |
