Canada's Lanni Marchant smiles after racing to a fourth place finish in the women's marathon at the Commonwealth Games in Glasgow, Scotland on Sunday, July 27, 2014. Marchant is hoping to do an almost unfathomable double at the 2016 Rio Olympics - run both the 10,000 metres and the marathon. The Canadian record holder in the marathon is gunning for the Olympic standard in that event at the Scotiabank Toronto Waterfront Marathon on Sunday. THE CANADIAN PRESS/Andrew Vaughan