Fitness & Gyms in Littleton, NH

“I am a new CrossFit athlete, I have been to 2 classes, I'm out of shape and I have social anxiety about going to gyms ... A friend said that it's a great gym so I decided to give it a try and I'm so happy I did! First the people are so friendly, it really is a community and I really appreciate the positive and supportive energy. The 2 trainers I've worked with have been so nice, they have helped me feel welcomed, they have helped me understand what to do next and helped me with my form. The gym is very clean and there are no mirrors, it's about exercising to feel good and become strong. The second night I went the instructor had a baby in a carrier, it was really beautiful to see,there were children there, such a wonderful environment, I can't think of a better experience!”

“OMG!!!! Blown away! Just took my first class. I moved up from Massachusetts and have been in spin classes for years with many different kinds of instructors and rooms.. This studio and instructor were by far the BEST ever! Kim has thought of everything! The music is perfection...every bike has a fan...the room has space between the bikes..the room has windows..each bike has it's own cleaning supplys..great stretches at the end of class..and you get a towel! Oh..and you will get fitted on your bike! Kim spent the entire class instructing on form..constant reminders as she has laser focus on what we were all doing on our bikes. . Wow..just wow. What a beautiful vibe she has created in the heart of Littleton. I am soo psyched to have finally found a studio that does it right! Thanks Kim!”

“I’m not someone who typically writes reviews, but Ace Fitness deserves one. A few friends who had been at Ace for years spoke so highly of Ryan and the camaraderie that I knew I had to try it for myself. After months of reaching out, Ryan accommodated me with a spot in the Boot Camp class back in August 2025. It was by far the best decision I’ve ever made for my health, both physically and mentally, and it’s only been 10 months.

Ace Fitness isn’t just a gym. It’s not just boot camp classes or personal training. When you walk through those doors, you’re joining a family, and I don’t use that word lightly. From day one, everyone has been welcoming, motivating, and genuinely invested in each other’s success. We push each other, challenge each other, and above all, we support each other’s individual goals. For someone on the more introverted side, that kind of environment is genuinely life-changing.

Ryan knows his craft, full stop, and frankly he undercharges for what he brings to the table. He’s always available to answer questions, steps in with thoughtful advice when you need it, and tailors programming to your specific needs without being asked twice. The group workouts alone are worth every penny.

As my goals have evolved, so has my experience at Ace. I’ve recently started working toward a customized program to train for an upcoming strongman competition, something I never would have imagined when I first walked in. And then there are the Strongman Saturdays, where you get to put your week of hard work to use on a variety of tailored strongman events. It makes the whole week feel purposeful.

If you’re in the Littleton area and you’ve been going back and forth on whether to commit, stop waiting. Just go talk to Ryan. Ace Fitness is the best investment I’ve ever made in myself, and I’m only getting started.”

“Good parking. Wheelchair accessible. Restrooms with showers. Lockers. Very good assortment of free weights and machines, all well maintained in a spotless facility. Massage, physical therapy and trainer services available via app. 24/7/365 access for members. Very reasonable cost.”