The head of the organisers, Vivek Singh said they were hoping for the air quality to improve in the next few days.
"We accept there is an environmental issue and it a challenge for us. The air quality is not good at all and we are concerned about it. But we have to live with it and we are here to continue the race," Singh, the joint managing director of Procam International, said.
He said the issue of poor air quality was there last year also and the current situation will improve in the remaining 10 days. He added most of the participants would not be running long distance now (as training) and they would be in 'wind-down' period.
"There was a situation like this last year. The air quality improved towards the race day last year also. Olympic marathon champion (Eliud Kipchoge) ran and won the race last year. He also made a statement (that he wanted to run in a polluted city that that there was no need to worry).
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Singh said that none of the elite athletes from abroad have not complained or ask anything about the poor air quality till now and they all have confirmed their participation.
He said three factors should dispel the doubts from certain quarters about the environmental issues and the possible harmful effect on the runners.
Singh, however, said his organisation would mull over changing the date of the race next year onwards.
"Yes, this issue was identified last year. We will sit after this year's race and see what will be the best window available, earlier or later than this current window."
This year's race will witness a supreme battle between the best of Indian and international elite athletes. The men's elite race will see world marathon champion Geoffrey Kirui (2:08:27). Yigrem Delemash, the runner-up of last edition of ADHM, will challenge him for the title.
The defending women's champion Worknesh Degefa (67:42) will also be in action along with the women's 10,000m world champion and Rio Olympics winner Almaz Ayana.
Olympian and Asian Athletics Championship 3000m steeplechase gold medallist Sudha Singh will be headlining the elite Indian women's line up.
This year's race will have eight Olympians, four of whom will be Indians.
Four-time Olympic medallist swimmer Anthony Ervin will be the event ambassador while British sprint legend Linford Christie, who is being brought by Puma, will also be present on the race day.
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