| Sumner to Imola | 5,517.85 mi (8,880.12 km) |
| Sumner to Impruneta | 5,546.47 mi (8,926.18 km) |
| Sumner to Induno Olona | 5,357.19 mi (8,621.56 km) |
| Sumner to Inverigo | 5,373.72 mi (8,648.16 km) |
| Sumner to Inveruno | 5,377.22 mi (8,653.81 km) |
| Sumner to Inzago | 5,392.22 mi (8,677.93 km) |
| Sumner to Iseo | 5,399.02 mi (8,688.89 km) |
| Sumner to Isernia | 5,745.89 mi (9,247.11 km) |
| Sumner to Isola Capo Rizzuto | 5,977.15 mi (9,619.29 km) |
| Sumner to Isola del Liri | 5,724.90 mi (9,213.33 km) |
| Sumner to Isola della Scala | 5,445.78 mi (8,764.14 km) |
| Sumner to Isola Vicentina | 5,434.74 mi (8,746.37 km) |
| Sumner to Ispica | 6,056.91 mi (9,747.65 km) |
| Sumner to Istrana | 5,447.38 mi (8,766.71 km) |
| Sumner to Itri | 5,747.97 mi (9,250.47 km) |
