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Chennai Runners Bigs Backyard Ultra

Course record: 25 yards (Laishram Singh - 2025).

RACE HAND BOOK 2025 Part 1 : Race Details Welcome to Chennai Runners Big’s Backyard Ultra (CR BBU). This is the first time this event is being organized in Chennai. It’s a format that’s gaining popularity across the world and in India as well – we’ve seen it being organized across different cities. Some of you participants would have already experienced it in another city/country. The concept of the run is simple. It’s a “Last One Standing” Race and in the end, just one runner will finish the race. All other runners are a DNF. Every hour, another loop, until only one runner is left standing. T…

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