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  1. Sally Simmonds

Park running with Iwan Thomas

A new fitness event called 'parkrun' is encouraging thousands of people from across the south to participate in weekly 5 kilometre runs. One supporter is Britain's most successful 400m runner, Iwan Thomas. Sally Simmonds joined him at his local run through the park.

Anyone can take part in 'parkruns' and people of all ages and abilities have been taking up the challenge.

Find out if there is a 'parkrun' near you by clicking here.