Location: Scottish Highlands
Website : http://www.skylinescotland.com/more-races-/trail-races/5k-trail-race/
Part of Salomon Skyline Scotland and billed as Britain's toughest 5k, the Grey Mare’s Trail Race shares some of the same terrain as the Salomon Mamores VK, which is an indication of the short but very sharp challenge for participants. The route includes a short but super-steep ascent on a memorable zig-zagging rocky trail in beautiful woodland, after which it levels out on a wide trail to give fantastic views west over Loch Leven and the surrounding Munros.