A team of dads tackled river crossings, mud-filled trenches, mountains and a 700ft vertical slope to raise funds for a Cobham charity.

Six dads from across the country, including Alex Smith, 38, from Cobham, joined more than 1,750 people to take on the Mighty Deerstalker on March 14, deemed the UK’s toughest 10km trail race.

The group took on the challenge, which takes place from sunset, to help raise £5,000 for Harrison’s Fund.

Participant Gary Smith, 40, from Winchmore Hill, London, said: “As a fellow parent, I just can’t imagine what it must be like to know that your son is terminally ill and suffering with a debilitating disease and not be able to prevent it.

“It’s tough for me knowing that any money raised is very unlikely to save Harrison’s life, but it might save another family from suffering in a similar way.”

The team of dads will also take part in the public element of the International Triathlon Union World Championship leg at Hyde Park in London in August and an Iron Distance Triathlon in Weymouth in September.

Alex Smith, CEO of Harrison’s Fund, said he was extremely proud of the team for putting themselves through the challenge.

He said: “It is one thing to donate money but quite another to put yourself through all these physical challenges.

“Our charity isn’t just about saving Harrison it’s about saving anyone, both now and in the future, who unfortunately have or might have Duchenne.”

To donate, visit harrisonsfund.com.