Every weekend tens of thousands of people turn out in force to take part in their local Parkrun as they walk or run the 5k distance.
Formed in 2004, there are now Parkruns in 20 countries as beginners and elites challenge themselves at the free events established to promote a healthier and happier planet.
World 1500m champion Jake Wightman is among the stars who have been spotted going through the motions.
