You will start in at Howth Castle and make your way up through Deer Park Golf course. Once past the clubhouse you will begin 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 Rd. 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 Deerpark golf course which you circumnavigate as you make your way to the finish line at the main club house.