| Highlands Ranch to Imola | 5,431.66 mi (8,741.42 km) |
| Highlands Ranch to Impruneta | 5,448.28 mi (8,768.16 km) |
| Highlands Ranch to Induno Olona | 5,258.90 mi (8,463.39 km) |
| Highlands Ranch to Inverigo | 5,277.85 mi (8,493.88 km) |
| Highlands Ranch to Inveruno | 5,275.32 mi (8,489.80 km) |
| Highlands Ranch to Inzago | 5,296.71 mi (8,524.23 km) |
| Highlands Ranch to Iseo | 5,310.54 mi (8,546.48 km) |
| Highlands Ranch to Isernia | 5,657.18 mi (9,104.35 km) |
| Highlands Ranch to Isola Capo Rizzuto | 5,893.65 mi (9,484.91 km) |
| Highlands Ranch to Isola del Liri | 5,629.81 mi (9,060.30 km) |
| Highlands Ranch to Isola della Scala | 5,362.48 mi (8,630.08 km) |
| Highlands Ranch to Isola Vicentina | 5,359.81 mi (8,625.79 km) |
| Highlands Ranch to Ispica | 5,926.73 mi (9,538.16 km) |
| Highlands Ranch to Istrana | 5,379.49 mi (8,657.45 km) |
| Highlands Ranch to Itri | 5,648.35 mi (9,090.14 km) |
