1. LAUGAVEGURINN, ICELAND
This four-day, 80-kilometre trek starts at Skógar in the south and heads north to Landmannalaugar, passing waterfalls, volcanoes and glaciers en route. Within the first two hours, in fact, you’ll pass 20 waterfalls, as well as the Eyjafjallajökull volcano, whose ash clouds closed airports throughout Europe for six days in 2010. Laugavegurrin translates to ‘hot springs route’, and as you step over the Laugahraun lava field or check out the Storihver hot spring, you’ll no doubt see why. After you’ve reached a bleak mountain pass set between two glaciers, you’ll trek into the valley of Thórsmörk, which was visited by J.R.R. Tolkien before he penned The Hobbit and supposedly inspired his descriptions of Middle Earth. Camp or stay in pre-booked huts, available from June to September.