| Siena to Illzach | 363.58 mi (585.12 km) |
| Siena to Ingre | 558.11 mi (898.19 km) |
| Siena to Irigny | 359.54 mi (578.62 km) |
| Siena to Isbergues | 654.66 mi (1,053.57 km) |
| Siena to Issoire | 427.17 mi (687.46 km) |
| Siena to Issoudun | 519.19 mi (835.56 km) |
| Siena to Issy-les-Moulineaux | 576.67 mi (928.06 km) |
| Siena to Istres | 318.50 mi (512.57 km) |
| Siena to Ivry-sur-Seine | 572.23 mi (920.92 km) |
| Siena to Jarville-la-Malgrange | 443.87 mi (714.33 km) |
| Siena to Jeumont | 590.35 mi (950.08 km) |
| Siena to Joigny | 500.24 mi (805.05 km) |
| Siena to Joinville-le-Pont | 569.32 mi (916.23 km) |
| Siena to Joue-les-Tours | 587.64 mi (945.72 km) |
| Siena to Jouy-le-Moutier | 592.90 mi (954.18 km) |
