The race will raise funds for the Blanchardstown stroke unit and will take runners and walkers on a course starting at Castleknock College and travelling through the magnificent Farmleigh Estate in the Phoenix Park.
Details of the race can be found by following Castleknock5km on Facebook and Twitter.
The event is sponsored by Declan Waters Autocare and supported by local businesses.
Online entry is €20 with funds raised going to Blanchardstown Stroke Unit.
You can register here.