Over the years, the Chennai Marathon has grown to be the largest running event in Tamil Nadu and the second largest in India. The marathon now regularly attracts participation from international athletes.
A prize money event, the Chennai Marathon 2023 will have four events for men and women including a Full Marathon (42.195 Km) that is the flagship race of the event, the Perfect 20 Miler (32.186 Km) which was introduced for the first time in 2019, the Half Marathon (21.097 Km) and the 10 km Run.