Cotswold District Council is spending £380,000 on the autumn revamp of the centres in Cirencester and Bourton-on-the-Water.
Both gyms will receive a full refurbishment with new flooring and equipment. The layouts will reflect the latest trends, with more space given to functional and free weights areas, along with cardiovascular equipment.
The centres, managed by SLM Everyone Active, will also be redecorated.
Cirencester Leisure Centre’s refurbishment will take place from Sunday, September 18 and is set to reopen to customers on Saturday, October 1.
Bourton-on-the-Water Leisure Centre’s gym refurbishment will take place from Monday, October 3 and will reopen on Saturday, October 15.
The gyms will be out of use during these periods although Cirencester Leisure Centre will be offering a temporary gym for members who wish to use it.
Cllr Jenny Forde, cabinet member for health and wellbeing, said: “I am so pleased we are making these improvements in our leisure centres.
“We are listening to what our residents say they need, to support them to be fit and healthy and the changes are in response to that.
“People tell us that they really want to improve their health and be more active, especially coming out of the pandemic.
“We hope that the refurbishment will provide more workout options for people wanting to become active, lose weight, get fit and improve their general wellbeing.
“The new fitness equipment will also be more energy efficient, reducing the power demand from the leisure centre’s equipment, helping to tackle the climate crisis.”
Jamie Nesbit, contract manager at Everyone Active, said: “Cirencester Leisure Centre and Bourton Leisure Centre remain an integral part of the community and we’re excited to build on this by improving our current gym offering.
“We’re confident that our members will benefit greatly from this investment.
“Not only will it help to increase our prevalence as a hub for the local community, but also work to support our mission – for everybody to reach their target of 30 minutes’ exercise, five times a week.”