The Airtel Delhi Half Marathon will commence on Sunday, 21 October from Jawaharlal Nerhu Stadium. About 35,000 marathoners are expected to participate across different categories which will start as early at 5 am and will go ahead till 9:10 am.

As the air quality continues to dip in Delhi, we trace the marathon route to see what it looks like early morning a day before the final event. We checked the air quality at four locations of the route - JLN Stadium, Lodhi Road, Rajpath and Janpath. It fell in the severely bad category for all of these locations.