Founded in 2004, the free weekly 5km event has grown into a global fixture of weekend life, taking place in parks, fields, seafronts and even prisons

An event to mark the millionth parkrun took place in west London on Saturday, acting as a celebration of the community cohesion and public health benefit that the charity has been aiming to achieve across the past two decades.

The former Olympic champion Dame Kelly Holmes joined thousands of locals and parkrun fanatics to mark the milestone in a west London park – the venue for the very first parkrun in 2004.