N4 road (Ireland)

N4 road
Bóthar N4
Route information
Length	198.21 km (123.16 mi)
Location
Country	Ireland
Primary destinations	(bypassed routes in italics) County Dublin Dublin (M50) Lucan County Kildare Leixlip Maynooth Kilcock County Meath Enfield Clonard County Westmeath Kinnegad (M6 to Galway) Mullingar (N52) Ballinalack Rathowen County Longford Edgeworthstown (N55) Longford Town (N5 to Westport, N63) Newtownforbes County Leitrim Roosky Dromod Aghamore Drumsna Jamestown Carrick-on-Shannon (R280) County Roscommon Boyle (N61) County Sligo Ballinafad Castlebaldwin Collooney (N17) Ballysadare (N59) Sligo town (N15, N16)
Highway system
Roads in Ireland Motorways Primary Secondary Regional

M4 motorway
Mótarbhealach M4
Route information
Length	62 km (39 mi)
Existed	1994–present
History	Completed 1994–2006
Component highways
Major junctions
From	Lucan
Major intersections
To	Kinnegad
Location
Country	Ireland
Primary destinations	Leixlip, Kilcock, Enfield
Highway system
Roads in Ireland Motorways Primary Secondary Regional

The N4 road is a national primary road in Ireland, running from Dublin to the northwest of Ireland and Sligo town. The M6 to Galway diverges from this route after Kinnegad, while the N5 to Westport diverges at Longford town. Most sections of the N4 that are motorway-standard are designated the M4 motorway.