| Thornbury to Imola | 825.30 mi (1,328.19 km) |
| Thornbury to Impruneta | 840.80 mi (1,353.13 km) |
| Thornbury to Induno Olona | 651.70 mi (1,048.81 km) |
| Thornbury to Inverigo | 670.86 mi (1,079.65 km) |
| Thornbury to Inveruno | 667.84 mi (1,074.78 km) |
| Thornbury to Inzago | 689.67 mi (1,109.92 km) |
| Thornbury to Iseo | 704.80 mi (1,134.27 km) |
| Thornbury to Isernia | 1,049.70 mi (1,689.33 km) |
| Thornbury to Isola Capo Rizzuto | 1,286.16 mi (2,069.88 km) |
| Thornbury to Isola del Liri | 1,022.44 mi (1,645.45 km) |
| Thornbury to Isola della Scala | 757.59 mi (1,219.23 km) |
| Thornbury to Isola Vicentina | 758.26 mi (1,220.29 km) |
| Thornbury to Ispica | 1,332.52 mi (2,144.49 km) |
| Thornbury to Istrana | 781.08 mi (1,257.02 km) |
| Thornbury to Itri | 1,041.45 mi (1,676.06 km) |
