R581 road
Bóthar R581
R581 leaving the N20 (between New Twopothouse village and Old Twopothouse crossroads)
Route information
Length	8 km (5.0 mi)
Location
Country	Ireland
Primary destinations	County Cork Leaves the N20 at New Twopothouse Village Old Twopothouse Cross Roads Doneraile - Main Street; terminates at the R522 north of the town
Highway system
Roads in Ireland Motorways Primary Secondary Regional

The R581 road is a regional road in Ireland which runs from the N20 at New Twopothouse village to Doneraile in County Cork.

The road is 8km long.

In 2012 and 2013 the R581 was realigned to straighten it and to bypass some habitations. In 2011 archeological investigations in advance of the realignment were conducted by Rubicon Heritage and revealed the site of the former Caherduggan Castle east of Old Twopothouse at 52°11′53″N 8°37′41″W / 52.1981°N 8.6281°W / 52.1981; -8.6281.^[1]

• Roads in Ireland
• National primary road
• National secondary road

• Roads Act 1993 (Classification of Regional Roads) Order 2006 – Department of Transport
• Nicholl, John (September 2016). "Some leather finds from Caherduggan Castle, Doneraile, Co. Cork. Ireland". Newsletter of the Archaeological Leather Group (44).