R400 road (Ireland)
| R400 road | |
|---|---|
| Bóthar R400 | |
R400 – crossing the Bog of Allen south of Rhode | |
| Route information | |
| Length | 43 km (27 mi) |
| Location | |
| Country | Ireland |
| Primary destinations |
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| Highway system | |
The R400 road is a regional road in Ireland, linking Mullingar, County Westmeath to the R419 at Cushina, County Offaly.