Stephanie Holden-Rhodes and her husband Jack, both 28 and of Taylor Crescent, are holding the memory walk in remembrance of Stan Tinker, who died aged 87 in 2010.
She told the Chronicle: “We’re going to be walking 24km on March 20 and anyone who knows us knows that’s going to be a challenge.
“There’s a story around the route that we’re going to be walking as well - when my grandad was bad with dementia he decided to walk home from the hairdressers in Cudworth instead of waiting like usual.
“When we found him he was crying and he was blue, so because it’s a memory walk we decided that we’re going to walk that route.”
The pair had originally thought they were going to raise £500, but within a matter of days they had already surpassed their target and so hope to raise £800.
“The support has been lovely and I think it’s because it’s something that can affect anybody,” she added.
“We were hoping to raise £500 but we passed that pretty quickly so our new target is £800.”
To donate to their fundraiser, visit https://gofund.me/4811b606.