The gym at Lodge Park Sports Centre in Corby is being extended and revamped.
New fitness equipment will be fitted and the area is being redesigned to suit the needs of existing and future customers.
The gym is to close from Monday, July 21, until Sunday, August 31, while the work is carried out.
To give gym users as much information as possible about the changes, Corby Council is holding an information evening at the centre in Shetland Way on Monday, July 14, starting at 7.15pm.
Corby Council’s lead member for community, Cllr John McGhee, said: “This is an exciting time for the sports centre and our customers.
“We are committed to providing the best for those who use the gym and we are always encouraging new people to come along and use our facilities. We hope the redevelopment will do just that and that we can provide a better service.
“We apologise for the inconvenience caused by closing the gym for a short period, but we are sure people will be pleased with the changes.”