In 1886, H. C. Hart wagered fifty guineas with the naturalist R. M. Barrington that he could walk the 111 km between the tram terminus in Terenure in Dublin, Ireland to the summit of Lugnaquilla in Wicklow and back in under 24 hours. Hart, accompanied by Sir Frederick Cullinan, walked from Terenure to Lugnaquilla, in the Wicklow Mountains - a total of 75 miles - and back in 24 hours, making a record at the time. Hart left Terenure at 10.58pm on 20 June 1886 and arrived back at 10.48pm the next evening. The success of this challenge is remembered by the commemorative Hart Walk.