Considerable traffic delays are expected in the east of the country over the weekend as GAA fans travel to Dublin for the Leinster football final tomorrow and hurling games on Sunday, gardaí have warned.
Traffic delays are also expected in Baltray, Co Louth, where the Golf Irish Open is taking place.
Gardaí in Mullingar say they expect a large number of people to travel to Croke Park tomorrow for the Westmeath v Laois replay. The game begins at 6.15 p.m. while the minor hurling game between Mayo and Kildare kicks off at the earlier time of 4.15 p.m.
Gardaí have advised motorists to depart in good time as delays are expected in particular at Kinnegad where the N6 and N4 merge. Motorists are being urged to use alternative routes if possible.
On Sunday, traffic delays are again expected on routes to Croke Park. Kilkenny play Clare at 2 p.m. and Antrim take on Cork at 4 p.m.
The usual traffic restrictions will apply around Croke Park from noon on Saturday and 8.30 a.m. on Sunday.
As part of the Garda operation, Clonliffe Road will be cordoned off from the Drumcondra Road junction to the Ballybough Rd junction. Restrictions will also apply on the North Circular Road, the Ballybough Road and the Drumcondra Road.
Parking will be available at Clonliffe College from 11 a.m. tomorrow and Sunday, and at O'Connell School on North Richmond Street from noon on both days.
In other sports fixtures, the Irish Open Golf tournament in Baltray, Co. Louth, is expected to attract a large number of spectators. Roads into Baltray, north of Drogheda, are expected to be busy from 10 a.m. to 7 p.m. tomorrow and Sunday.
In Northern Ireland, there may also be delays in Portrush, North, Co Antrim, where the British Seniors Open is being held in the coastal town. The tournament ends on Sunday.