Runnershai launches a new team running challenge:can you keep the legs on for 24 hours? The 24 hour challenge is a team effort to complete the 5 kilometers track as many times as possible from 10.00 a.m. to 10.00 a.m on June 14. Each team can be up to 6 runners, who plan how they will shift between running and rest. The only rule is that only one runner from each team can be on the track at once.

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