The week's walks take place in stunning north west Wales. Four million people visit the region each year to enjoy its beautiful lakes and coastlines, as well as the challenging Snowdonia mountain range. With 15 peaks all topping 3000 feet, it's one of the most popular hiking destinations in Britain. It's also a favourite of five hiking fanatics, all hoping to prove their chosen route is the most beautiful - and to claim the prize.First to lead the walks is 30-year-old mum of two Laura. She guides the group on a walk up to Cwm Idwal, the location of Wales's first national nature reserve. As well as incredible views, this heartfelt walk includes wild swimming and homemade brownies. But will it be enough to convince the others that Laura's walk is the best?