Families have been taking part in the Gransden Muddy Fun Run.
The event, supported by Star Radio, took place on Sunday 26 January.
Runners took the opportunity to run a 3 kilometre course and for those who enjoy more endurance, a Mystery Marathon.
The activities started and finished at Barnabas Oley Primary School.
After the races took place, prizes were awarded to the finishers.
It's been raising money for the school's PTA.
Brigid Collett, Deputy Headteacher, told Star Radio:
"It's been absolutely fantastic. The PTA have put in so much work into organising this great event.
"Luckily the weather held out. All the children came prepared, some dressed up and really showed great enthusiasm".
The school's PTA added:
"Barnabas Oley PTA is committed to raising funds to enhance the educational experience of every child at Barnabas Oley school.
"In recent years we have paid for repairs to the swimming pool and the trim trail, purchased new computers for the ICT suite, and supported the renovation of the school library.
"We also help cover the costs of school trips, visiting theatre companies, educational toys, school leavers' gifts and much more. We are proud of the difference we make to the school and are very grateful for the continued support of the parents and carers of the children at Barnabas Oley".