| Portchester to Celbridge | 287.38 mi (462.49 km) |
| Portchester to Clondalkin | 281.81 mi (453.52 km) |
| Portchester to Clonmel | 301.44 mi (485.12 km) |
| Portchester to Cobh | 317.33 mi (510.69 km) |
| Portchester to Cork | 325.16 mi (523.29 km) |
| Portchester to Donegal | 393.16 mi (632.73 km) |
| Portchester to Douglas | 323.47 mi (520.58 km) |
| Portchester to Drogheda | 297.07 mi (478.08 km) |
| Portchester to Dublin | 278.51 mi (448.22 km) |
| Portchester to Dun Dealgan | 312.03 mi (502.17 km) |
| Portchester to Ennis | 362.75 mi (583.79 km) |
| Portchester to Enniscorthy | 259.93 mi (418.31 km) |
| Portchester to Finglas | 281.70 mi (453.36 km) |
| Portchester to Galway | 376.09 mi (605.25 km) |
| Portchester to Glanmire | 322.46 mi (518.95 km) |
