N21 road (Ireland)

N21 road
Bóthar N21
Route information
Length	84.37 km (52.43 mi)
Location
Country	Ireland
Primary destinations	(bypassed routes in italics) County Limerick Patrickswell Adare Rathkeale Newcastlewest Abbeyfeale County Kerry Castleisland Tralee - terminates at Camp on N22/N69 Tralee Bypass
Highway system
Roads in Ireland Motorways Primary Secondary Regional

The N21 road is a national primary road in Ireland. The route runs from the M20 outside Limerick to Tralee with connecting roads to other parts of County Kerry. It is 84.37 km (52.43 mi) in length. It runs through the towns of Abbeyfeale, Newcastle West, Adare and the village of Templeglantine. Prior to October 2010 the N21 also ran through the town of Castleisland. The town has since been bypassed. Rathkeale was also bypassed in 1992.