Siblings Lois McDermot, nine, and 11-year-old Ross, took on two of the Yorkshire Three Peaks in aid of Overgate Hospice, Elland.
They took on the challenge in memory of their great-grandma Jean, who passed away at the hospice on December 31 last year.
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Lois and Ross were joined by mum Natalie, dad Andrew and uncle Stuart, and the family are hoping to raise £2,500.
Fifteen-year-old Bradley Cope completed the Yorkshire Three Peaks in an astonishing time of nine hours with his dad Anthony. They were part of a team of 18 Overgate supporters from across Calderdale who took part on Saturday, May 19.
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Also taking on the peaks was a team from The Venue in Barkisland.
Neil Sheard, challenge and lotteries fundraiser from Overgate, said: “We are extremely proud of and grateful to all who took part in the challenge.
“It was a beautiful day and we were humbled by their hard work and dedication – especially the youngsters.
“The three peaks is a great challenge to take part as a team,” he added.