Diversions and rolling road closures will be in place at various points in Dublin on Sunday to facilitate the Ironman 70.3 triathlon.
Between 7am and 10.15am the bike course will travel from Dun Laoghaire, skirting Dublin Bay, over the Eastlink Bridge and through the city on the North Quays, before entering Phoenix Park.
Vehicles will be prevented from crossing the Liffey between the Eastlink Bridge and the Frank Sherwin Bridge during these hours and drivers have been advised to used the M50 instead.
Blackrock: Between 5am and 10am there will be no vehicle access into Blackrock. The bottom of Craysfort Road and Mount Merrion Avenue will be shut.
Booterstown: The bottom of Booterstown Avenue will be from 5am until 10am with pedestrian access only to the Dart station.
Dun Laoghaire: There will be full access to Dun Laoghaire town but no access to the Harbour between 4am and 9.30am. The transition from swim to bike takes place on the green at Marine Parade and local swimmers are advised to use the Forty Foot bathing area between 6am and 9am.
Dunboyne: A section of the R149 / L2222 / Rooske Road will be fully closed to traffic between 8am and 12 noon. For the Dunboyne to Maynooth diversion drivers should travel east towards Clonee and take the R147 towards Dunshaughlin, turning onto the R154, L2210 and R158 for Kilcock.
Kilcock: Sections of the R125 through Main Street and onto the Kilcock Road towards Maynooth will be closed between 8am and 1pm.
Maynooth: Maynooth town is generally unaffected but drivers will not be able to exit the town on the Kilcock Road and should instead use Parson Street/ Newtown Road if travelling west.
Sandymount: There will be no access on to Strand Road and Beach Road between 6am and 10am.
Summerhill: After leaving Dunboyne the course continues along the Summerhill Road until the junction at the R125 taking a left towards Kilcock. Cars travelling south along R125 will be able to turn right onto the R156 at this junction and will be able to access the M4 or Kilcock via the R407.
A full list of closures and diversions can be found on the ironman.com website.