| Penarth to Imola | 842.82 mi (1,356.38 km) |
| Penarth to Impruneta | 856.81 mi (1,378.90 km) |
| Penarth to Induno Olona | 668.73 mi (1,076.21 km) |
| Penarth to Inverigo | 688.11 mi (1,107.41 km) |
| Penarth to Inveruno | 684.22 mi (1,101.15 km) |
| Penarth to Inzago | 706.84 mi (1,137.56 km) |
| Penarth to Iseo | 722.83 mi (1,163.28 km) |
| Penarth to Isernia | 1,065.91 mi (1,715.41 km) |
| Penarth to Isola Capo Rizzuto | 1,302.09 mi (2,095.51 km) |
| Penarth to Isola del Liri | 1,038.11 mi (1,670.67 km) |
| Penarth to Isola della Scala | 775.90 mi (1,248.70 km) |
| Penarth to Isola Vicentina | 777.60 mi (1,251.42 km) |
| Penarth to Ispica | 1,344.55 mi (2,163.84 km) |
| Penarth to Istrana | 801.06 mi (1,289.18 km) |
| Penarth to Itri | 1,056.62 mi (1,700.46 km) |
