| Mainz to Impruneta | 457.46 mi (736.21 km) |
| Mainz to Induno Olona | 286.78 mi (461.53 km) |
| Mainz to Inverigo | 296.92 mi (477.85 km) |
| Mainz to Inveruno | 309.80 mi (498.57 km) |
| Mainz to Inzago | 312.60 mi (503.09 km) |
| Mainz to Iseo | 310.07 mi (499.01 km) |
| Mainz to Isernia | 646.09 mi (1,039.78 km) |
| Mainz to Isola Capo Rizzuto | 875.92 mi (1,409.66 km) |
| Mainz to Isola del Liri | 627.64 mi (1,010.09 km) |
| Mainz to Isola della Scala | 349.82 mi (562.98 km) |
| Mainz to Isola Vicentina | 334.82 mi (538.84 km) |
| Mainz to Ispica | 969.99 mi (1,561.05 km) |
| Mainz to Istrana | 346.13 mi (557.04 km) |
| Mainz to Itri | 652.33 mi (1,049.83 km) |
| Mainz to Ittiri | 648.49 mi (1,043.64 km) |
