Aiden Miller, from Callands, is taking on the mighty challenge to raise funds for Comic Relief.
The 27-year-old, who works at Anytime Fitness on Grappenhall Road, will be taking on the Stairmaster for an 8,850-metre climb.
This will equal around 44,250 steps and is predicted to take around 10 hours.
The gym will also be holding a raffle and Aiden’s colleagues Leanne and Sophia will be providing baked goods and standing in to do some steps when Aiden has any short breaks.
The challenge will take place on Red Nose Day on March 17, and Anytime Fitness will be holding an open day so non-members are able to come and cheer Aiden on or take part in the raffle.
It isn’t the first time the Anytime Fitness trio have taken on a gruelling challenge to raise funds for charity.
Last January, the team completed one million steps between them to fundraise for The Lilac Centre in St Helens.
They also won a community champion award last year for their charity efforts.
To donate to Aiden’s fundraising efforts, visit here: https://www.justgiving.com/fundraising/rednoseday23-anytime-fitness-4725d06a-8548-464b-9456-1fcd5f1150a7