The Wicklow Round is a long-distance hill running challenge in the Wicklow Mountains in Ireland. The route follows a prescribed 100-kilometre circuit of 26 mountains, which must be completed in a fixed order, that total over 6,000 metres (20,000 ft) of elevation; there is some flexibility on route-choices between peaks. Rounds completed outside of a cut-off time of 24-hours are not generally recorded. Irish ultra-runner Joe Lalor is credited with the creation of the Round.

Lugnaquilla is the highest of the Wicklow Mountains in Ireland, rising to 925 metres (3,035 ft). It is also the highest Irish mountain outside of County Kerry, and the highest point in County Wicklow and the province of Leinster. Lugnaquilla overlooks the Glen of Imaal to the west and Glenmalure to the east.