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Open 24 hours
28B Nashua Rd, North Billerica
Gyms
“Have been going here all summer and I thought the gym was really nice and well kept! Everyone was very friendly and it was overall nice environment. If I wasn’t moving I’d totally extend my membership!”
8AM - 12:30PM
60 South Ave, Burlington
Gyms
“this is a great place. I‘m glad I started with D1. I have taken 10 classes so far. I already fell that much stronger than before. It‘s very structured class focusing on performance, strengthening, and core. The class breaks down to small , tangible tasks, not overwhelming at all. This is a small family business that doesn’t Have the corporation and chain store Atmosphere. I used to train with orange theory. They have the standardized protocol for classes, With videos guide you through the training process. I felt like i was a chicken on manufacturer line. At D1, The coach will design the class, it feels like personal trainer in a group setting. The equipment is excellent. After each class, I simply feel good. It is not too hard, Making me not wanting to go. I just focus on showing up. I always get very good workout. I feel that this is something that I can stick to. It is not Like some gyms That I would sign up and quit or not going.”
7:30 - 11AM
930 Main St, Acton
Gyms
“This is a top tier facility with great coaching and equipment. Tons of options for group classes and 1 on 1 sessions.
Very knowledgeable coaching. For example they are focusing on good running technique in class as the weather warms up and we start running more. Highly recommend for any range of athleticism and experience.”
“One of the best gyms anywhere. All the instructors are very nice....my youngest is on the spectrum and they work with him during classes. They really do care to make sure everyone feels comfortable in class.”
“I started my training with Julie and Daniel at Activate Fitness a month ago and I’m beyond thrilled with their professionalism, program, and facility. After many years of a sedentary lifestyle and ailments, I was very nervous about starting my journey back to health and Activate Fitness turned out to be inviting, motivating, and the trainers are invested in my progress. Semi private sessions and tailored nutritional plans have kept me confident in my consistency and proud of my results. There is a warm sense of camaraderie amongst the patrons and the atmosphere is always energizing! Julie and Daniel expertly created a whole health mind body experience and couldn’t be nicer!”
7 - 10AM
18 Red Spring Rd Suite 103, Andover
Gyms
“I absolutely love going to Andover Fit Body Boot Camp! From the moment you walk in, you're welcomed into an amazing environment filled with positive, supportive people. Everyone is so friendly and encouraging, which makes working out something I genuinely look forward to.
The coaches are energetic, informative, and incredibly kind. They take the time to explain each station and make sure everyone understands the exercises, no matter their fitness level. Their encouragement and knowledge help you feel confident and motivated throughout every workout.
If you're looking for a gym with great workouts, an uplifting atmosphere, and coaches who truly care about your success, I highly recommend Andover Fit Body Boot Camp!”
7:30 - 10:45AM
158 Great Rd, Bedford
Gyms
“I had a great Barre3 experience at Barre3 Bedford during my recent visit to Boston (this was my 74th Barre3 studios visit across the US).
The owner, Natasha Robinson, was very welcoming and also a great instructor!
The Barre3 class combo of cardio, strength and mindfulness is the best workout both physically and mentally!”
“I was referred to Peoplefit by my physical therapist to begin a fitness program after dealing with back and shoulder issues. I worked with Ali who was amazing! She created a gradual, full-body program based on my goals. She consistently checked in on how I was feeling and as I progressed, she increased the weight and added exercises to target the areas I wanted to focus on. She also stretched me after workouts to improve my flexibility. Everyone at Peoplefit is extremely friendly and helpful.”
Open 24 hours
7 Summer St #5, Chelmsford
Gyms
“ABSOLUTELY love this place! Not only is this one of the best workouts I’ve ever had, the owner and trainers are fantastic! The gym provides a really strong community and a sense of belonging. The energy is always positive and upbeat!”
“This is a 100% positive review of Skill of Strength (SOS). I’m a masters athlete at the local, regional, national, and world level. My needs and expectations are not typical - I don’t go to the gym because I want to lose a few pounds, I go because it helps me compete. I have specific goals and SOS provides the kind of expert performance coaching that I need in order to thrive. Mike Perry and his team understand my goals and mentality and as a result I’m incredibly well prepared. I remain injury free with little or no pain, my physical capacity seems to keep increasing, and I can perform at a level that most people… can't. I’ve been an SOS member for years and I joined after a thorough search of the Boston area for a high performance, technically oriented gym staffed by expert coaches who are on the cutting edge of their field. If you have specific competitive goals and want coaches who work with high performance amateur and professional athletes, all packaged in a gym where standing on the gas is encouraged, you’ll be right at home at SOS.”
“If you’re looking for a community that will push you beyond what you thought was possible, look no further. This CrossFit team is truly something special.
From day one, the coaches bring an incredible level of expertise and genuine enthusiasm to every session. They take the time to learn your strengths, work through your weaknesses, and scale workouts so that every single person — from complete beginner to seasoned athlete — feels challenged and supported in equal measure.
Coach Brian pushed me in the best possible way. Every session, they challenged me to go further than I thought I could. Coach Lori , she’s amazing all the time with such grace and smiles :)”
“Club 600 has a friendly community atmosphere and extremely dedicated staff. I highly recommend my trainer, Gabriella, who I have been strength training with for > a year. Gabriella balances support & motivation with well planned training programs to ensure that I continue to progress without hurting myself or getting bored.”
“I absolutely loved Christina’s and Demie’s classes. They are super fun while also bringing high intensity and attention to detail when it comes to cueing members through proper form while differentiating for multiple levels in a single class.”
“Couldn’t recommend this place more! I joined knowing that I needed a consistent routine that I couldn’t keep on my own, and I am so glad that I did. It is such a great community in Westford with fantastic staff. You are always greeted with a smile here. I have gained so much confidence and strength these past several months and always leave with a great boost of energy for the day! Thank you OTF Westford!”
Open 24 hours
181 Stedman St, Lowell
Gyms
“I’ve been going to Spindell Barbell Club for almost 8 years, and it has been fantastic. As a college athlete, it’s rare to find a gym that truly supports sport-specific training. Bobby designed the gym to meet the needs of serious athletes while also creating a welcoming environment for people of all ages, experience levels, and goals.Bobby is always purchasing, updating, or even building new equipment based on what members need and what he notices is missing, which is exactly what you want from a gym owner. The 24/7 access is another huge plus; it's something you rarely find, especially at gyms that are actually worth training at.
I’ve never had a single complaint, and I can’t recommend Spindell Barbell Club highly enough.”
“First time doing aerial yoga, this was an experience but I’m not ready to do more because it literally made me so nauseous for a whole day. However the teacher said was amazing and so patient during the entire class.”
“I joined CrossFit Merrimack in January 2013 as a New Year's resolution, and over a decade later, I'm still a member. Bob has built an incredible environment that is welcoming, supportive, and motivating for all fitness levels. The coaching is excellent, the programming is challenging and the community is second to none. What started as a resolution became a lasting part of my life, and I highly recommend CrossFit Merrimack to anyone looking for a great gym and a great community.”
“I rated this a 10 because the sessions feel supportive on every level—physically and mentally. I leave feeling stronger in my body and clearer in my mind, which makes the experience feel therapeutic, not just like a workout.”
7:15AM - 5:30PM
423 Great Road, Acton
Gyms
“*****2nd Review written in September 2025.. I successfully finished the AV1 in the Dolomites this summer. I am grateful to Jazzercise for adequately preparing me for this physically demanding hike. As someone who does not typically hike, like myself, having completed two successful 10-day intensive hiking trips in Europe, I strongly recommend Jazzercise to individuals who are preparing for hiking.
****1st Review written in February 2025. Since joining Jazzercise Acton Center in 2018, I've achieved a great level of physical fitness. Jazzercise has enabled me to tackle challenging hikes, including a 10-day Tour du Mont Blanc hike through France, Italy, and Switzerland in 2023. I'm looking forward to another 10-day hike in the Dolomites, Italy this summer. I'm grateful for the wonderful and supportive Jazzercise teachers and classmates. As always, l love to go to the classes.”
7AM - 1PM
1934 Lakeview Avenue Bldg 7, Dracut
Gyms
“Love this gym ? it's small but everyone is friendly and I look forward to my gym sessions. There's a decent variety of equipment and it never feels like people are fighting over stuff or waiting a long time for something.”
“Great place. My kids love it. Steven and the staff are great with kids. My kids love going to cheer and they love their teams. They motivate my kids to want to do more and do better”
8AM - 12PM
750 Main St, Winchester
Gyms
“I can’t say enough great things about the workout classes at FreddyLive Fitness. Freddy Freddy maintains a high energy fun environment and pushes us hard. I’ve been doing his HITT and Strength and other classes for a few years now and have been seeing some great results--- more energy and better fitness and strength. I highly recommend the morning 6AM classes. The early wake-up may seem intimidating but once you get into the routine you wont regret it.”
“Honestly HFF changed my life. I started a little over a year ago and I feel healthier, stronger, and more confident than ever before. Jeremy and Emily are incredibly supportive and motivating. They help make you the best version of you! Can't say enough good things! Also- having dog friends at the gym is a huge plus! 🐶 🐾”
Open 24 hours
315 Middlesex Rd Units 6 & 7, Tyngsborough
Gyms
“This is a great gym. Easy location right off the highway. Equipment is new and kept up to date. Wide array of weights dumbells, kettlebells, machines. People who work there are so nice - and same goes for people who work out there. Check it out !”
“The best gym I have ever been to! It has a climbing area, basketball court (they also play volleyball there), racquetball courts, multiple table tennis boards, fitness classes, fitness assessment room, powerlifting area, CrossFit area, stretching area, weight machines and cardio room, private family rooms with cardio machines, indoor track, and so on. There are tennis courts, soccer, and baseball fields near the gym with outdoor running track. They offer free classes and multiple gaming/sporting/health events. They also have weekly club events. Lots of free weights and squat racks are usually available. The gym is clean and spacious. This is my favorite gym!”
7AM - 12PM
18 Adams St, Burlington
Gyms
“I saw one of the PTs at Movement Workshop, Taryn, when I had a running injury that wasn't getting better with rest. In addition to manual therapy work, she built a progressive mobility and strength program that has my runs feeling better than than have in years. She understood my goals and was able to make the home program work with the equipment I already had. We were also able to address areas that weren't specific to what I thought was the injured area. Although I'm done with PT, I'm looking forward to continuing to work with with Taryn in the small group training sessions.”
6:45AM - 4:15PM
475 Boston Road, Billerica
Gyms
“By far my favorite gym! The owners awesome and hands on. 24 hour access for members, multiple options for programming, classes, or work out on your own. I would highly recommend this gym!!”
9AM - 12PM
360 Merrimack Street suite 368, Lawrence
Gyms
“Just had my son’s 5th birthday party here and it was an absolute blast! My son and his friends loved it, Steve did a great job doing activities with them the whole time. Perfect space to have a private kids party - basically a giant obstacle course so they are nice and tired 😅 would definitely recommend!!”
“Got off the couch and came to Crossfit High Power to work on shedding quarantine weight. The coaching staff here is unbelievably good at tailoring workouts to each individual's needs. The facility is bright, clean and spacious which is awesome in these Covid times. The location is perfect, parking is never an issue and the community here is so supportive. Do yourself a favor and sign up!!!”
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“Highly recommended gym/facility with excellent open space, uplifting atmosphere, friendly, knowledgeable and professional trainers! Definitely not your typical gym..and just better all around. Boston Barbell is welcoming, meets all my expectations for fitness. I couldn’t be happier with the progress made so far. Training is very personalized and on point..had opportunities to train with both Chris and John. Both excellent in their position in helping to meet my health and fitness goals..getting me stronger and toner with each session. So much is available, looking forward to starting small group sessions soon. Best place to be a part of especially if health and fitness matters.”