Dublin has 28 trails including medium, easy, extra difficult, and difficult difficulty trails. The trail with the highest elevation climb is Wicklow Round 24 Hour Challenge and the one with the least climb is Poolbeg Lighthouse. The longest trail is the E8 Coast To Coast Walk Ireland at 622 km. To complete this hike you should budget at least 30 days. For a shorter adventure you can try the Carrickgollogan - Mountain Access Route at 2.24 km. This could be done in as little as 1 days. Trails with the best offering of hostels include Bull Island and Howth Cliff Walk, Wicklow Round 24 Hour Challenge, Wicklow Way, Wicklow Way - 4 Day Dublin to Glenmalure, and North Dublin Mini Trail.