Delhi Half Marathon organized in the capital on Sunday; over 8,500 people, including 266 foreign athletes participate in the premier running event.Delhi is all set to run on 1st November. And, it seems the capital is throbbing with the idea of rubbing shoulders with the celebrities who are going to run in the event. Shahrukh Khan has confirmed his participation and that is going to add star power to the event this year.Till now, the participation level has gone up by several notches and the organisers are quite confident of putting up a show to remember.The Airtel Delhi Half Marathon, India's premier and the top rated running event which has been accredited with IAAF Road Race will be held in the National Capital on Sunday.Olympian Deriba Merga of Ethiopia would look to exploit his familiarity of the track to defend his title when over 8,500 people, including 266 foreign athletes, brave a chilly Sunday morning.