The 3rd leg starts at the Relay changeover point in Ringmahon and this is where the route changes completely from previous years.
This is the narrowest part of the course and without doubt, the steepest. It is however pretty short and very soon you'll be running down the other side and onto a dead straight walkway.
Pretty soon, you'll begin to see clues as to the origin of this walkway with a series of bridges. It was in fact an old railway line that went from Cork City to Rochestown, Passage, Monkstown, Carrigaline and Crosshaven.
After a while, you come to what was the old railway station in Blackrock until you reach the end of the walkway and you rejoin the route from last year on the Marina. From here, you run along a tree lined route all of the ways to the changeover point just after the end of the Centre Park Road.
Overall, one of the longest relay sections at roughly 5.8 miles but also one of the flattest. Most of it is on walkways and quiet roads and is also probably the nicest section of the whole Marathon route.