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Aditya Sonawane and Sanjivani Mhatre train at Upvan Lake in Thane. Pic/ DATTA KUMBHAR

'Are you a machine, brother? You have unbelievable feet,' reads a Facebook comment posted by a friend of Aditya Sonawane, as the latter flaunts his 100-miles marathon medal. Sonawane has been running for over a year, making and breaking his own records. Working as an accountant on days he's not running, he has completed 47 marathons so far. "I started with regular marathons, and have run six ultras — more than a 100 km each. I used to run for myself, but I now feel like running for a cause," he Sonawane, talking about his upcoming marathon.