Organized by the Chennai Trekking Club, and one of the most popular running events in the southern part of India, the Chennai Iron Triathlon is back this year. The non-profit event comprises 4 challenging categories, each more gruelling than the others.

We start with an Olympic category which includes a 1.5K swim, 45K of cycling, and a 10K run. The categories only get tougher: The Half Iron sees participants finishing a 1.9K swim, 90K of cycling, and 21K running. The 3/4 Iron has a 2.9K swim, 135K of cycling, and 31K running, while the headline event is the Full Iron which is a 3.9K swim, 180K of cycling, and a full marathon or 42 km of running. Registrations have now been closed for the events.

The event is set in Kalpakkam, 15km south of Mahabalipuram with the running course being a mostly shaded 10.5K double loop and the cycling route set along scenic, peaceful state highways; the swimming section is completed in an open river. There are aid stations every 2.5 km to help the runners in cases of injury, or for general assistance.

For more information about this event, visit the official website. For the full list of runners participating in various categories, visit this page.

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