description Chennai Marathon Overview
The Chennai Marathon is an annual road-running event held in Chennai, the capital of Tamil Nadu, India. Its program includes a full marathon and shorter race categories, allowing both experienced distance runners and recreational participants to take part. The routes use public roads through the metropolitan area, and the event is associated with organized mass-participation running in the city.
help Chennai Marathon FAQ
Which race distances are offered at the Chennai Marathon?
The official registration terms list an Open 10K, a Half Marathon of 21.1 kilometers, a Twenty Miler of 32.2 kilometers, and a Full Marathon of 42.2 kilometers. The standard full-marathon route is also shown as 42.195 kilometers on the official 2025 map. [Chennai Marathon terms](https://myprofile.thechennaimarathon.com/Home/Terms)
How old must a runner be to enter the Chennai Marathon?
The current terms list a minimum age of 16 for the 10K events and 18 for the Half Marathon, Twenty Miler, and Full Marathon. Participants must submit age proof when collecting their race bib. [Chennai Marathon terms](https://myprofile.thechennaimarathon.com/Home/Terms)
Where did the Chennai Marathon full-marathon route start and finish in 2025?
The official 2025 route map shows the Full Marathon starting at Napier Bridge and finishing at Indian Maritime University on East Coast Road. The route passed through Chennai roads toward the East Coast Road before the finish. [2025 route map](https://thechennaimarathon.com/images/Full_Marthon_map_2025.pdf)
Who organizes the Chennai Marathon?
The event materials identify Chennai Runners as the organization behind the main Chennai Marathon. An official race booklet says the first Chennai Marathon was organized in 2012. [Chennai Runners booklet](https://chennairunners.in/backend/public/pdf/rundown_v2_WEB.pdf)
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