Around 30,000 people are taking part in this year's marathon
Thousands are taking part in the VHI Women's Mini Marathon in Dublin today, with the marathon kicking off earlier at around 2pm.
Around 33,000 runners, joggers and walkers are taking part in this year's mini marathon.
Regular participants are being reminded that the route is reversed this year for the 35th anniversary.
The 10km marathon begins at Fitzwilliam Street Upper with the finish line on Upper Baggot Street.
Some road closures are in place in the centre and south of the city and Dublin Bus will have diversions on a number of routes.
Those running in the VHI Mini Marathon are doing so in aid of a number of different charities. CRY Ireland (Cardiac Risk in the Young) who support families affected by SADS (Sudden Adult Death Syndrome), are one of those charities.