| Healdsburg to Imola | 6,043.21 mi (9,725.61 km) |
| Healdsburg to Impruneta | 6,068.67 mi (9,766.58 km) |
| Healdsburg to Induno Olona | 5,878.06 mi (9,459.83 km) |
| Healdsburg to Inverigo | 5,895.39 mi (9,487.71 km) |
| Healdsburg to Inveruno | 5,897.21 mi (9,490.64 km) |
| Healdsburg to Inzago | 5,914.12 mi (9,517.86 km) |
| Healdsburg to Iseo | 5,922.94 mi (9,532.05 km) |
| Healdsburg to Isernia | 6,272.07 mi (10,093.92 km) |
| Healdsburg to Isola Capo Rizzuto | 6,506.27 mi (10,470.83 km) |
| Healdsburg to Isola del Liri | 6,249.17 mi (10,057.07 km) |
| Healdsburg to Isola della Scala | 5,971.45 mi (9,610.13 km) |
| Healdsburg to Isola Vicentina | 5,962.62 mi (9,595.91 km) |
| Healdsburg to Ispica | 6,573.30 mi (10,578.71 km) |
| Healdsburg to Istrana | 5,977.24 mi (9,619.43 km) |
| Healdsburg to Itri | 6,271.13 mi (10,092.41 km) |
