| Fort Collins to Illzach | 5,067.01 mi (8,154.56 km) |
| Fort Collins to Ingre | 4,867.94 mi (7,834.20 km) |
| Fort Collins to Irigny | 5,076.68 mi (8,170.13 km) |
| Fort Collins to Isbergues | 4,771.68 mi (7,679.28 km) |
| Fort Collins to Issoire | 5,025.49 mi (8,087.75 km) |
| Fort Collins to Issoudun | 4,916.93 mi (7,913.04 km) |
| Fort Collins to Issy-les-Moulineaux | 4,844.02 mi (7,795.69 km) |
| Fort Collins to Istres | 5,182.72 mi (8,340.78 km) |
| Fort Collins to Ivry-sur-Seine | 4,848.40 mi (7,802.74 km) |
| Fort Collins to Jarville-la-Malgrange | 4,986.86 mi (8,025.58 km) |
| Fort Collins to Jeumont | 4,841.87 mi (7,792.24 km) |
| Fort Collins to Joigny | 4,921.00 mi (7,919.58 km) |
| Fort Collins to Joinville-le-Pont | 4,851.24 mi (7,807.31 km) |
| Fort Collins to Joue-les-Tours | 4,850.94 mi (7,806.83 km) |
| Fort Collins to Jouy-le-Moutier | 4,827.70 mi (7,769.43 km) |
