UltraFlex - Gym in Rotherham in Rotherham | Facilities,... UltraFlex - Gym in Rotherham is a gym in Rotherham, offering gym and fitness facilities, strength and cardio training, membership enquiries. Address: 175 Effingham St, Rotherham S65 1BLOfficial website Things to do today Things to do tomorrow This weekend Free events Family events Kids activities in Sheffield Live music in Sheffield Live sports in Sheffield Cinemas in Sheffield Gyms in Sheffield All Sheffield events