The half marathon, which first featured in 2005, is scheduled for November 19.
In a press statement, Bharti Airtel said it has been a strong supporter of the event over the last ten years but has received "a lot of feedback from our customers and citizens at large expressing concern on holding the marathon in view of the prevailing air pollution in the city."
Airtel said the marathon, which infuses the spirit of fitness and good health, is a voluntary event and runners should take into consideration the environmental factors, including pollution and their health, while participating.
"Air pollution poses serious health risks and it is important that these concerns are addressed urgently and appropriately by the authorities for Airtel to continue association with the event next year and beyond," the statement said.
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Procam in a press statement on November 4 called demands for cancellation or postponement of this year's race as "shortsighted and misplaced."
"The Airtel Delhi Half Marathon is inherently a panacea for the pollution issue plaguing Delhi. The race day keeps cars off the designated 21 km of the city, and salt mixed with effluent treated water that is used to wash the course, ensures that the dust pollution is negated making the race day far more conducive for running," it had said.
"Procam International is continuously monitoring this situation and working with experts in the medical and ecological domain," it said.
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