| Rhondda to Illzach | 548.44 mi (882.63 km) |
| Rhondda to Ingre | 346.10 mi (556.99 km) |
| Rhondda to Irigny | 556.19 mi (895.10 km) |
| Rhondda to Isbergues | 263.75 mi (424.46 km) |
| Rhondda to Issoire | 518.04 mi (833.71 km) |
| Rhondda to Issoudun | 404.10 mi (650.34 km) |
| Rhondda to Issy-les-Moulineaux | 316.76 mi (509.78 km) |
| Rhondda to Istres | 682.32 mi (1,098.09 km) |
| Rhondda to Ivry-sur-Seine | 321.14 mi (516.83 km) |
| Rhondda to Jarville-la-Malgrange | 471.78 mi (759.25 km) |
| Rhondda to Jeumont | 339.58 mi (546.49 km) |
| Rhondda to Joigny | 393.92 mi (633.96 km) |
| Rhondda to Joinville-le-Pont | 324.02 mi (521.45 km) |
| Rhondda to Joue-les-Tours | 346.80 mi (558.12 km) |
| Rhondda to Jouy-le-Moutier | 300.45 mi (483.53 km) |
