Charity slimmers raised more than £1,000 for the East Anglian Air Ambulance charity during a six-week weight loss programme.
The group from the Shefford and Stotfold Slimming World groups lost an incredible 1,685 lb between them.
They raised a total of £1,400.65 for the charity in doing so.
Members brought in the cash by seeking sponsorship for their slimming over the allotted time period.
Extra funds were raised through a raffle which was held in the final week of the slimathon and from a collection pot which was set up.
Dawn Breacher, who runs the groups said: “Members have all learned to eat more healthily during the six weeks with unlimited amounts of rice, pasta, potatoes, lean meat, poultry, fruits and vegetables.
“I am so proud of my members for their hard work. They have all added years to their lives by doing this slimathon.”