BATMAN and Robin will be going head to head in a race covering more than 100 miles - the same distance as London to Worcester - to raise money for a children's home.
The dynamic duo, also known as Worcester boys Callum Davies and James Underwood, aim to run the 113 miles on a pair of treadmills outside Asda on Saturday, August 23.
They are trying to raise enough money to build a sensory garden at Green Hill Lodge Children's Home with the money they raise from this mammoth challenge.
The date is set, they've done the training and their capes have been freshly ironed but the pair have stumbled across a technical obstacle and are in need of two treadmills to use on the day.
The aim is for the two to compete against each other at the supermarket and see who can complete their share of the 113 miles first.
Aside from seeing who's going to win, the day has been set up by the boys to raise awareness of the campaign and encourage more people to donate to their Just Giving page.
The treadmills can be any make or model and can be collected from anywhere across the county.
Mr Davies and Mr Underwood have already run the Malvern Half Marathon as well as the Evesham 10k and have raised more than £1,000 towards the £30,000 target to build a sensory garden for the children at Green Hill who have autism.
As well as their London to Green Hill challenge, they will be taking part in the Worcester City Run on September 21 as well as the Cheltenham half marathon and the Bupa Great Birmingham Run.
Batman said: "The support we've received from local residents so far has been overwhelming and when the sensory garden is built it will be because of the generous support and donations.
"Hopefully there will be somebody out there who can be a hero for a day and lend us some equipment so we can carry on raising money for this brilliant cause."
Robin added: "As the ever loyal side-kick, I even have a van available so we can fly by anywhere across Worcestershire to collect."
Anyone who can support the cause and lend a treadmill for the day is encouraged to contact Batman on firstname.lastname@example.org or via Twitter @batmanruns.
For more information about the campaign please visits sponsorbatmanandrobin.co.uk.