Gravel tours use unpaved tracks, forest roads and quiet farm lanes, with wider tyres than a road bike. There are three on this site. The Riverside Gravel Intro covers 34 km with 250 m of climbing on wide riverside tracks, so it suits beginners. The Forest Gravel Loop is a full day of 72 km and 1,050 m through pine forest, a good step up for riders with some stamina. The Volcano Gravel Day is the toughest at 88 km and 1,600 m, passing extinct volcanoes and beech forest. Expect slower average speeds than on tarmac, and allow for softer surfaces after rain.