The Ballymun challenge will see locals tested to their limits to raise vital funds for St. Francis Hospice.
Locals will run, cycle, row or ski four miles every four hours for a whopping total for 48 hours. It is being held today, 30 September at 6pm with over 1,500 raised through the iDonate page.
The event in Ballymun Trinity Comprehensive is being run in conjunction with Ballymun Recovery Month.