R421 road (Ireland)

R421 road
Bóthar R421
R421 turns left at Ballybritt, County Offaly
Route information
Length	50 km (31 mi)
Location
Country	Ireland
Primary destinations	County Tipperary Roscrea – leaves the R445 (N62 road) Crosses the Limerick-Ballybrophy railway line County Offaly Leap Castle Clareen Joins the R440 Kinnitty Leaves the R440 Cadamstown County Laois (R422) County Offaly Killurin Joins the N52 Charleville Castle leaves the N52 Tullamore, crosses the Dublin-Westport/Galway railway line (R443), (R420), terminates at the N52 north of the town.
Highway system
Roads in Ireland Motorways Primary Secondary Regional

The R421 road is a regional road in Ireland which runs southwest-northeast from the R445 south of Roscrea to the N52 north of Tullamore. The route also passes through Clareen, Kinnitty and Killurin. The bulk of the route is in County Offaly with small sections in counties Tipperary and Laois. The route is 50 km (31 mi) long.