| Fort Collins to Imola | 5,382.26 mi (8,661.91 km) |
| Fort Collins to Impruneta | 5,399.50 mi (8,689.65 km) |
| Fort Collins to Induno Olona | 5,209.83 mi (8,384.40 km) |
| Fort Collins to Inverigo | 5,228.68 mi (8,414.75 km) |
| Fort Collins to Inveruno | 5,226.45 mi (8,411.15 km) |
| Fort Collins to Inzago | 5,247.56 mi (8,445.12 km) |
| Fort Collins to Iseo | 5,261.05 mi (8,466.85 km) |
| Fort Collins to Isernia | 5,608.25 mi (9,025.61 km) |
| Fort Collins to Isola Capo Rizzuto | 5,844.83 mi (9,406.34 km) |
| Fort Collins to Isola del Liri | 5,581.16 mi (8,982.01 km) |
| Fort Collins to Isola della Scala | 5,312.83 mi (8,550.17 km) |
| Fort Collins to Isola Vicentina | 5,309.74 mi (8,545.21 km) |
| Fort Collins to Ispica | 5,880.35 mi (9,463.51 km) |
| Fort Collins to Istrana | 5,329.11 mi (8,576.37 km) |
| Fort Collins to Itri | 5,599.96 mi (9,012.26 km) |
