At 83, Barbara Humbert dreams of taking part in next year's Paris Olympic Games 'Marathon For All', a race opening the Olympic route to non-elite competitors for the first time - and she's got the pedigree to beat some runners half her age.
Not your typical great-grandmother, the German-born Frenchwoman runs 50 km (30 miles) a week, has competed in dozens of marathons, and has the medals to show for it.
