![Cover image](https://images.tarmacs.app/cycling-routes/photos/united-kingdom/northern-ireland/4526661211/antrim-castle-1.webp)
Ultimate Challenge via Antrim Castle and Slemish
A road cycling route starting from Holywood
Conquer legendary climbs and embrace breathtaking nature.
![Map miniature of "Ultimate Challenge via Antrim Castle and Slemish" cycling inspiration in Northern Ireland, United Kingdom. Generated by Tarmacs.app cycling route planner](https://images.tarmacs.app/cycling-routes/routemaps/600/united-kingdom/northern-ireland/holywood/road/325377.webp)
Embark on the ultimate cycling challenge through captivating landscapes and legendary climbs. This challenging 136-kilometer route starting near Holywood covers iconic spots such as Antrim Castle and Slemish. With an ascent of 1132 meters, this road biking adventure is best suited for experienced cyclists seeking an extraordinary test of endurance. Explore the historical treasures of Antrim Castle and revel in its majestic grounds. Tackle challenging climbs towards Hannahstown and admire the panoramic vistas along the ride. Lose yourself in the picturesque village of Broughshane before conquering the legendary Slemish mountain. Relish the tranquility of stunning natural scenery as you cycle through Ballyeaston, Whiteabbey, and diverse landscapes en route back to Holywood. This route promises an unforgettable and challenging cycling odyssey for the most adventurous riders.
Highlights on the route
Cycling routes from Holywood:
Cycling routes nearby:
![Image of Dundonald](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/dundonald-4.webp)
![Image of Greenisland](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/greenisland-5.webp)
![Image of Belfast](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/belfast-5.webp)
![Image of Carrickfergus](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/carrickfergus-5.webp)
![Image of Carnmoney](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/carnmoney-5.webp)
![Image of Newtownards](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/newtownards-5.webp)
![Image of Bangor](https://images.tarmacs.app/cycling-routes/covers/united-kingdom/northern-ireland/bangor-5.webp)