| Penarth to Illzach | 533.45 mi (858.51 km) |
| Penarth to Ingre | 329.48 mi (530.25 km) |
| Penarth to Irigny | 539.60 mi (868.41 km) |
| Penarth to Isbergues | 250.72 mi (403.50 km) |
| Penarth to Issoire | 501.37 mi (806.87 km) |
| Penarth to Issoudun | 387.42 mi (623.50 km) |
| Penarth to Issy-les-Moulineaux | 300.68 mi (483.90 km) |
| Penarth to Istres | 665.65 mi (1,071.26 km) |
| Penarth to Ivry-sur-Seine | 305.09 mi (491.00 km) |
| Penarth to Jarville-la-Malgrange | 457.19 mi (735.77 km) |
| Penarth to Jeumont | 326.52 mi (525.49 km) |
| Penarth to Joigny | 377.72 mi (607.87 km) |
| Penarth to Joinville-le-Pont | 308.02 mi (495.71 km) |
| Penarth to Joue-les-Tours | 330.23 mi (531.45 km) |
| Penarth to Jouy-le-Moutier | 284.42 mi (457.74 km) |
