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Open 24 hours
28B Nashua Rd, North Billerica
Gyms
“I think my choice of going from yoga to power lifting speaks volumes for the gym and the coaches. Ashlyn is terrific -- warm and hard driving at the same time. She won the 2023 MA power lifting championship, and her coaching is focused on the techniques that over time mean the difference between injury and progress. Coming to the gym has been the highlight of my week!”
“This studio is home to some of the most passionate coaches around. The team is dedicated to pushing you towards your goals. Huge thank you to Lisa, Liz and Kellie for fostering such a supportive environment.
Orangetheory changes lives”
“I’m visiting some friends for the week and wanted to join them at their gym (Best Fitness). When I went to get a week pass I spoke to Kurt and he was super helpful!”
5:30AM - 8PM
930 Main St, Acton
Gyms
“I highly recommend Mason if you are dealing with an injury that's interfering with your training. I've had recurring lower back and shoulder pain over the years. I met with Mason and he identified the movement patterns contributing to the pain, took the time to explain why I would be feeling pain, and created a warm-up program to address the root causes and allow me to move more freely in my workouts and in everyday life. Thanks Mason!”
Open 24 hours
150 Coliseum Ave, Nashua
Gyms
“Great place to get into shape in Nashua, New Hampshire. Brandon who works behind the counter usually drops everything to help others in the gym. I had a issue with trying to join online, Brandon told me to come in and he said he would help. I did get to join and I'm referring other friends like Robbie to join. Maybe Brandon should be a supervisor and share his expertise with others etc.”
“I’ve been exercising at Title Littleton for 7 months and it’s been a fantastic experience. Most of the classes are boxing-focused with a couple of kickboxing sessions each week. Every class is instructor-led, starting with a quick warmup, followed by boxing, and finishing with a solid core workout. The coaches walk around to correct form, give encouragement, which makes a big difference.
I especially enjoy classes with Masha, Paola, and Shalton — they’re passionate, motivating, and push you to give your best. I’ve also been taking private “Mobility” sessions with Joleen, and she’s amazing. It’s an hour of stretching and floor exercises that has really improved my strength and flexibility.
I’ve gotten stronger, lost weight, and genuinely look forward to workouts here. If you don’t like the typical boring gym routine and want something effective, fun, and supportive, I definitely recommend Title Littleton.”
Open 24 hours
7 Summer St #5, Chelmsford
Gyms
“Great place been going for about 2 months going three times a week and already feel more fit. Trainers are positive and it’s easy to get a great workout in in just 30 minutes.”
“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!”
“I am very satisfied with the iron gym, I discovered it a little over a year ago, and about 4 months ago I decided to sign up with the help of the wonderful personal Michelly Lira.
Helping with the training, and I confess that she is simply wonderful, so professional, so dedicated and careful in what she does... I really am extremely satisfied with her work, I recommend her to all my friends because I saw firsthand how professional she is !!! I've already managed to lose more than 10 kg and that's a victory for me.”
4:30AM - 7PM
1934 Lakeview Ave 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.”
Open 24 hours
16 Manor Pkwy, Salem
Gyms
“24hrs / overnight access includes usage of almost the entire sport complex [except the swimming pool].The primary Men's locker room includes an "almost hidden" discreet side door steam room off the communal shower; next to where a 6 man whirlpool sits dormant, needing repair / literally hidden behind a makeshift, prefabricated temporary wall. Multiple long term members have shared with me how beloved this whirlpool once was and that they dream of one day it being repaired and the wall finally taken down ⬇️. In my experience, when a men's locker room does have the divine ultimate troika of steam room, sauna, AND whirlpool, the space is elevated to some where truly rare, sublime, magical and these spaces are noted to be the most consistently busy (by daily usage) mens locker rooms (non-military / non-university) in the lower 48 states; Dowd YMCA, Charlotte, William White YMCA, Winston-Salem, Sports Mall, SLC, Lloyd Athletic Club, Portland OR, Prime Time Fitness, Burlingame, CA etc.If the new owners / management wants to continue elevating Salem Athletic Club to a world class level and to earn true loyalty from long time members, they will take down the ghastly temporary wall and reinstate this amazing whirlpool. ??”
6:30AM - 6:45PM
423 Great Rd, 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.”
Open 24 hours
77 Derry Rd, Hudson
Gyms
“As soon as I signed up I gained 20 pounds of muscle haha. But on a real note, the equipment here is amazing, the have just about every piece of specialty equipment you can think of, and if they don’t have it, they’re working on getting it. People here are awesome. They have a posing room!! 24 hour access. And best of all is that it’s never even crowded, I’ve never had to wait for equipment here. There’s no reason not to sign up. Oh, and dangelos is next door so I can order a steak and cheese between sets.”
“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!!”
5AM - 10PM
480 Boston Rd, Billerica
Gyms
“This was my first time visiting this location. The club was clean and well- maintained and the employee at the front desk was cleaning but still attentive when we came in. Music level was reasonable, too. We had a great workout, thanks :)”
Open 24 hours
50 Pleasant St, Dracut
Gyms
“Im very happy with this gym they prices very affordable very clean no complaints I been a member before left for reasons but im back I always will recommend this place!!!”
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 !”
5:30AM - 7:30PM
1100 Gorham St, Lowell
Gyms
“Merrimack CrossFit is hands down one of the best CrossFit gyms around! The atmosphere is electric—positive, motivating, and welcoming to all fitness levels. The coaches are incredibly knowledgeable, attentive, and always willing to help you improve your form, technique, and overall performance, they push you to be your best while keeping things safe and fun. The community here is amazing—everyone is supportive, friendly, and truly makes each workout an enjoyable experience. If you're looking for a top-notch CrossFit gym, this is the place to be! Highly recommend!”
7AM - 9:30PM
4 Littleton Rd, Westford
Gyms
“I really like this place. It's very clean and it has everything. Shawn and the staff are great. If you don't want to be in a gym where it's overcrowded with people taking their tripods out and video taping themselves when you just want to get a set in. Westfit is your place. Check it out.”
6AM - 8:30PM
83 Parkhurst Rd, Chelmsford
Gyms
“Dating back to when I think I started at Jazz (2017), THE BEST DECISION I’VE EVER MADE! From the instructors, the classes, the music, the positive energy & dancing next to all of you on the dance floor, AMAZING! Try it, you’ll LOVE it!”
3:00 PM - 8:00 PM 5:00 AM - 10:00 AM
30 Lowell Rd #21, Hudson
Gyms
“Anyone that knows me already knows how much I Love Jazzercise! The instructors are amazing and the Hudson, NH Center is great! Everyone is supportive and fun!!! Come on in and give it a try! You might see me there!”
“I went to an anime convention there, it was a nice and pretty place! the pool was a bit eh but everything else looked nice. so yeah that’s it, keep in mind I didn’t go into any hotel rooms I just visited the center!”
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“Juan is such a great coach. He knows how to reel me in from my competitive fire and helps me focus on form and control over me just going for it. But also knows how to push and encourage me if he knows I can do more.”