ONE OF THE UK’s TOUGHEST HALF MARATHONSnn(Part of the 3 Castles Medal Series 2019, New bling for 2019)nnA scenic but tough Half Marathon set in the beautiful SnowdoniaNational Park, North Wales, starting and finishing in the village ofLlanrwst which played host to theWorld Trail Running Championshipsin 2013. The park is a region ofhaunting beauty and grandeur, of wild rocky mountains, hidden valleys, cascading rivers, still glacial