Anytime Fitness - Colorado Blvd. Anytime Fitness in Denver CO is a health club that offers personal training, 24 hour fitness access, and a staff with extensive knowledge in training and fitness! As one of the cheaper gym options in downtown Denver, we make it easy to have all the amenities of the best gyms in the area at a fraction of the cost. Whether you are looking for a powerlifting gym in Denver co or just a local personal trainer, Anytime Fitness is the top gym choice.