Dogsled racers hope to outpace last year’s doping scandal

Doping scandals do not just affect Russian Olympic athletes. The world’s most famous dogsled race found itself under scrutiny when dogs at last year’s event tested positive for a banned painkiller.

Both organisers and competitors are now hoping to put that behind them as they set off on the Iditarod Trail in Alaska.

Al Jazeera’s Charlotte Bellis reports.