8 Dads have successfully completed the 'Three Peaks Challenge', scaling Snowdon, the highest peak in Wales, and tackling Cadair Idris and Pen-y-Fan - all within 15 hours.
But these are no ordinary dads, they're part of a small group who go by the name of 'Dad's United', and it was all to raise money for children's hospice Ty Hafan.
The group was set up at the hospice as a way of getting parents together to discuss issues and share advice and information.
It's now being used to raise awareness and raise money for the charity, who have helped the families through some of their most difficult moments.
So far the men have taken part in Wales' first ever Bubble football tournament, 5-a-side tournaments, Charity Football Days and the Ty Hafan Rainbow Run.
Martin Emery, who's 17-year-old son Jordan suffers with Lennox-Gastaut Syndrome, was referred to Ty Hafan 10 years ago.
He said, "To me the group is everything. We don't need to speak about what's going on, we're all there together, we support each other."
"We're now a really tight group of mates, and together we can achieve so much, and make such a difference for other families like ours."