EōS Fitness will let anyone walk into its Sandy location at no cost Monday, Aug. 31, as the chain marks 12 years in business.

No membership or RSVP is required for the open-house day, which runs from midnight to 11 p.m. at all EōS locations, according to a Sandy Journal event listing. All ages and fitness levels can use the gym's equipment, which at the Sandy location includes group fitness classes, Olympic lifting platforms, turf training areas and Smart Strength machines.

The Sandy gym sits at 10365 S 1300 E. A second nearby location at 5550 S 900 E in Murray also participates.

September promotions

The free day launches a month of promotions running Sept. 1 through Sept. 30. EōS is offering a 12-cent membership with no dues until Oct. 23, plus a 3-for-3 referral program. Details on which membership tier qualifies have not been published.

Standard EōS memberships start at $9.99 per month. The gyms are open 24 hours a day, seven days a week.

The chain's growth in Utah

EōS Fitness, founded in 2014, now has more than 225 locations open or in development across seven states including Utah. The Sandy gym opened in March 2023.

The chain opened a Syracuse, Utah, location in early 2026 and plans another in Riverdale in 2027.