Every Saturday from March to September we participate with the local running club.
They have a seniors event, and a sub juniors event (for kids under 13).
The kid’s event is only a 1km race, so it doesn’t last long.
After the kids run they adults do their event.
Now, normally the kids all play together.
About 30 minutes after we had all left it started to rain. It was light and didn’t last long, but that would properly explain the capture.