TheChennai Trekking Club(CTC) is a volunteer based, non-profit outdoor group. With 23 thousand members and hundreds of outdoor and sports events organized throughout the year it’s one of the largest and most active groups in South India. Weekly events includetrekking, cycling, biking, running and triathlons. The group is active in environmental conservation – on June 6th, 6000+ volunteers participated in theChennai Coastal Cleanupacross 10 cities in South India in association with The Hindu. On September 7th 2014, 1200 runners participated in the third edition of theChennai Trail Marathon - a multi-terrain trail challenge and first Ultra distance run near Chennai. CTC has organized 12 Triathlons including the Full Iron distance Triathlon in Dec 2013 – one of India’s first. CTC organized the Javadhu Hills Ultra run on Nov 2nd, 2014 in which 200 hill trail ultra runners participated. The group has been featured in more then 180 media publications.