Austin-based Camp Gladiator celebrated its 10th anniversary Aug. 27 of offering outdoor group workouts at more than 4,000 locations nationwide, including throughout Grapevine, Colleyville and Southlake.

The fitness company, headquartered at the CG Arena in Austin, is celebrating its birthday by offering an online flash sale for all its locations to encourage residents to try the boot camp-style program. Programs, also called camps, last four weeks and include 60-minute workouts with both cardio and strength exercises, according to Camp Gladiator.

Customers can purchase a pass for $30 that provides unlimited classes for four weeks from Sept. 10-Oct. 6. The online deal, originally valued at $189, will be available until Sept. 22.

Cofounder and CEO Ally Davidson and her husband started Camp Gladiator in 2008 after Davidson won the top prize on NBC’s obstacle course TV show, “American Gladiators.”