Airtel Delhi Half Marathon (ADHM) is an annual half marathon foot-race held in New Delhi, India. Established in 2005, it is both an elite runner and mass participation event. It is an AIMS-certified course and is listed as a Gold Label Road Race by the IAAF. The race has seen the best of the athletes competing since the course is considered one of the fastest half marathon route. The event sees about 40,000 participants through the race categories of half marathon, the 7 km Great Delhi Run, a 4.3 km run for senior citizens, and a 3.5 km wheelchair race