More than £180,000 has been raised in memory of Andrew Harper, the policeman who was killed on duty last week.
A crowdfunding page set up on JustGiving by the Thames Valley Police Federation to raise money for PC Harper's family – he had been married for just four weeks – has raised more than £160,000 from more than 8,000 donations.
"Personally, I have never been much of a runner – the longest I've ever done to date being 10k – however, I have decided to run this 20-mile, 200-obstacle course route to try and help save the lives of children with cancer and keep families together," he wrote on the page.
"Even if only one child benefits then it will be well and truly worth it."
PC Harper died on Thursday in Berkshire when he was dragged along the road by a vehicle.
Ten males aged between 13 and 30 have been arrested on suspicion of murder.
The Thames Valley Police Federation page says PC Harper’s family will receive all the money raised through the page.