Alison Bradley, Brian Bradley, Pam Rowan and Charlotte Collyer make up the Church Stretton fundraising branch of the RNLI.
Due to the Covid-19 pandemic, the charity has not been able to generate as many funds as usual so it came up with this virtual challenge for its supporters to take part in.
The group walked 25 per cent more than the original target of 300 miles, and reached 375 miles as a group.
Alison said the challenge was a chance for them to get outdoors and explore the area.
"For the past three or four years we have all been together as a committee," she explained.
"We are just amazed at the bravery and the courage of the lifeboat crews going out to sea.
"I was born in Weymouth so I am used to being by the coast but I am still amazed how much support we get round here from people.
"We reached the 300 mile target and thought we would add a bit more of a challenge, and try to get to that 125 per cent target. It has been really lovely.
"Brian and I have really enjoyed it. We walked some areas that were well known to us and others that were new to us.
"It was great to walk round the town and explore more of Church Stretton and where we live."
The group came up with a ‘virtual’ walk route from Church Stretton that would take them all across the Welsh coast.
First they headed westwards to Aberystwyth Lifeboat Station, then meandered northwards up the Welsh coast calling at lifeboat stations along the way before reaching Llandudno on the north Wales coast, returning home by an inland route.
The group have so far raised £562 and are hoping for a final push of donations to reach their target of £600.
The group are still logging some walks and there is time to donate.