|Location Map ( geo)|
|To:||Tullynagrow (border) (H827270)|
|Distance:||27.9 km (17.3 miles)|
|Meets:||R162, R180, N2, R183, R938, R182, B32|
The R181 runs from the R162 at Corclare near Shercock in County Cavan to the N2 at Castleblayney in County Monaghan, continuing thence to the Northern Ireland border at Tullynagrow, where is becomes the B32 to Keady.