You will start in Howth at Howth Castle and make your way to ascend Howth Hill. This terrain is steep and the track is narrow.
Once you reach the upper part of the hill you will traverse the south side of the hill until you reach Windgate Road. Here you have a change of terrain to sealed road until you join the old railway track greenway. You follow this track to the end and then once again begin to ascend Howth Hill. Coming onto Greenhollows Quarry Road you finally make it to the summit.
The route follows the trail back down the hill towards the finish line in Deer Park Golf Club.