It’s a sunny afternoon, a holiday, and the runners are winding up for the contest of their lives.
The opening fanfare includes balancing on walls, hide and seek, and tag round the park.
Reaching the starting blocks, they line up.
The bright colours of the participants make them easily recognisable and their sponsors cheer from the side-lines.
Red T-rex starts fast but the wrong way, yellow Stegosaurus plods after the green diplodocus, veers the left and falls over. It’s the blue triceratops that charges to the winning line.
“Again! Again!” squeal four children, as they race to collect their toys.