Runners braved a cold and muddy run through a river to raise funds for a village school.
About 150 people took part in the second Great Brook Run
About 150 people aged from six to 70 took part in the second Great Brook Run in Chadlington, Oxfordshire, in aid of the village school.
Conservative leader David Cameron, who lives nearby, started the race at the Tite Inn.
The mile-long course went over land through muddy fields from the pub and back along a cold brook.
The pub landlord, Michael Willis, said: "David Cameron wanted to join in but he reluctantly agreed to start the race for us instead."
Last year about 70 runners took part, many wearing fancy dress.
This year's entrants were warned the course would be more hazardous because summer flooding made the brook deeper.
All contestants were awarded a medal for taking part.