| Longmont to Illzach | 5,088.15 mi (8,188.59 km) |
| Longmont to Ingre | 4,888.40 mi (7,867.12 km) |
| Longmont to Irigny | 5,097.03 mi (8,202.87 km) |
| Longmont to Isbergues | 4,792.84 mi (7,713.34 km) |
| Longmont to Issoire | 5,045.59 mi (8,120.09 km) |
| Longmont to Issoudun | 4,937.19 mi (7,945.63 km) |
| Longmont to Issy-les-Moulineaux | 4,864.74 mi (7,829.05 km) |
| Longmont to Istres | 5,202.60 mi (8,372.78 km) |
| Longmont to Ivry-sur-Seine | 4,869.13 mi (7,836.11 km) |
| Longmont to Jarville-la-Malgrange | 5,008.04 mi (8,059.67 km) |
| Longmont to Jeumont | 4,863.15 mi (7,826.48 km) |
| Longmont to Joigny | 4,941.68 mi (7,952.86 km) |
| Longmont to Joinville-le-Pont | 4,871.99 mi (7,840.71 km) |
| Longmont to Joue-les-Tours | 4,871.11 mi (7,839.29 km) |
| Longmont to Jouy-le-Moutier | 4,848.44 mi (7,802.81 km) |
