| Frosinone to Idar-Oberstein | 629.16 mi (1,012.54 km) |
| Frosinone to Idstein | 641.13 mi (1,031.81 km) |
| Frosinone to Illertissen | 482.00 mi (775.71 km) |
| Frosinone to Illingen | 615.29 mi (990.22 km) |
| Frosinone to Ilmenau | 635.97 mi (1,023.49 km) |
| Frosinone to Ilsede | 749.53 mi (1,206.26 km) |
| Frosinone to Ilsenburg | 718.11 mi (1,155.69 km) |
| Frosinone to Ilsfeld | 549.56 mi (884.42 km) |
| Frosinone to Ilvesheim | 588.69 mi (947.40 km) |
| Frosinone to Immenstadt im Allgau | 437.88 mi (704.70 km) |
| Frosinone to Ingelheim | 629.82 mi (1,013.59 km) |
| Frosinone to Ingolstadt | 501.41 mi (806.94 km) |
| Frosinone to Iserlohn | 725.30 mi (1,167.26 km) |
| Frosinone to Isernhagen-Sud | 763.94 mi (1,229.45 km) |
| Frosinone to Ismaning | 462.84 mi (744.87 km) |
