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INTRVL Athletics

4.9 (53 reviews)
Closed 5:30 am - 6:30 AM, 9:00 AM - 10:00 AM, 4:00 pm - 9:00 PM
Updated 2 months ago

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Services - INTRVL Athletics

Group fitness

Virtual fitness classes

INTRVL Athletics Photos

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Recommended Reviews - INTRVL Athletics

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Reviews With Photos

Lucero A.

I've been doing CrossFit for a while now and it's something I truly love, but joining INTRVL has taken my training to another level. The coaches, Coach G, Coach Lauren, and Coach JB are incredibly knowledgeable and genuinely care about helping you improve. They've taught me so much and always push you to become stronger and more confident in your abilities. I recently started joining the gymnastics class and it's been one of my favorite parts. I love being able to work on skills, improve movements, and learn new techniques in a supportive environment. What really makes INTRVL special is the community. Everyone is so friendly and motivating you're surrounded by strong individuals who encourage each other every day. The gym is always clean, organized, and has an amazing energy. Coach JB also expanded the gym and added a 24-hour access side, which is a game changer. With a busy schedule, it's so nice to be able to train whenever it works for you without feeling rushed. If you're looking for a gym with great coaching, an awesome community, and a place that will truly help you grow, INTRVL is the place to be.

Jessica K.

Having been going to INTRVL for a while now, I wanted to update my review. In the last year, the gym has only gotten better including new equipment and more focus on designing classes that touch on everything from cardio to strength training. They make sure there's something for everyone. The coaches really care, watching and correcting you when needed but especially showing encouragement to keep you motivated until the last rep. The gym also fosters a community environment. Everyone here is pretty much like family and we want to see each other push ourselves to the next level. If you ever need help with lifting, form, technique or gymnastics, you can always ask the coaches or the long time members. The gym itself is always clean because the owner/Coach JB puts pride in cleanliness and orderliness. He's here when they open at 5AM and when they close at 8PM. He takes time to keep all the equipment organized and cleaned after every use by our gym members. I've been to several other gyms and none have compared to what INTRVL offers. If you ever feel like you need a home gym, this is the place. Even if you are new to strength training, everyone here welcomes new members and gets excited to share their knowledge for those just starting. You will definitely get used to the support from the coaches and members. You won't regret giving this gym a try! The support you receive from everyone here will help you reach your goals quicker than other gyms because you will want to go to multiple classes a week and never skip a gym day.

Freeway Battle 2023

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JB B.

Thank you for the kind words Sophia Sophia!! See ya in class

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1 year ago

The best gym with amazing coaches and wonderful people. No matter where you are on your fitness journey you will be welcomed here!

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Ask the Community - INTRVL Athletics

How much is monthly membership?

I don't have an exact number but it varies depending on how many months you purchase. All I remember is that it is a lot cheaper compared to other boxes. Also their class package is super reasonable!

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Review Highlights - INTRVL Athletics

My knees has been hurting but thankfully our trainer JB, Celeste, Rueben, Milo and Dexter were there to help me fix it!

Mentioned in 3 reviews

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Metroflex Gym

Metroflex Gym

4.9(347 reviews)
7.1 mi

I've been coming to Metroflex for several months now (since around April/May), and honestly... it…read morefeels like home. I originally found this gym because of my trainer, Bob, and I'm so glad I did. Metroflex is definitely old-school but in the best way possible. It's not overcrowded, there's room to actually train, and you're not fighting for equipment like you do at commercial gyms. What I love most is that they literally have everything: powerlifting, Olympic weightlifting, bodybuilding, CrossFit-style training, boxing, you name it. No matter what type of training you're into, this gym has the equipment and the space to support it. Coming from a commercial gym where it was always packed, limited machines, and chaotic, this place was a breath of fresh air. The vibe here is different. Everyone is welcoming, friendly, and actually there to work. Another huge plus: this gym is always open even on holidays. Hours might be a little shorter on a holiday, but they're still open, which means you can always get your workout in. That alone says a lot about how much they care about their members. It's hard to find a gym that checks all the boxes, but Metroflex really does. If you're serious about training and want a gym that feels like a community instead of a zoo, this is the spot.

Good range of equipment. But some of it is dilapidated and falling apart. The biggest issue is the…read moreabsolute filth! They don't vacuum the floors or clean the equipment. There is trash, insect parts (wings and legs of cockroaches), and very large dust balls all over the floor. And the machines are coated in dust. Hardcore doesn't mean filthy.

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Metroflex Gym - Lunge Area

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Lunge Area

Ark Fit - My workout partners!

Ark Fit

4.9(162 reviews)
9.2 mi

This gym has it all, the vibes, awesome trainers, intelligently programmed classes and most of all,…read morereally kind people who belong to and work at this gym. Everyone here is respectful and is focusing on their health, which allows for such a safe place to be. The classes are top notch and having two coaches in a class really does make a difference. It's really the only place where they actually correct your form and sometimes they make the exercises harder so you're getting the most out of every workout. I've been her for about two months and haven't had a mediocre experience yet, it's ALWAYS a great class! I've been to most of the popular studios (Nike, OTF, F45, Rumble and etc.), so I have a lot to compare it to. Just come and try it you'll love it!

I stumbled into Ark Fit just planning to look around and tour the gym. I hadn't worked out in years…read moreafter having a baby and honestly wasn't planning on jumping into anything serious. But while I was on the tour, the trainers encouraged me to try a class starting in 20 minutes. I was terrified, but I said yes.....and that one class reminded me that I could do hard things. It was exactly the push I needed (thank you Michelle and Tobias), and I signed up the same day (with zero pressure from anyone). Thank you Eric for answering ALL of my questions about membership and for being a welcoming presence while I nervously walked into a gym for the first time in years. What makes Ark Fit different is the people. The trainers don't just run a class, they bring the energy. They correct your form so you get better and stronger, and if something feels too hard, they'll modify it so you can keep moving. Every trainer has been warm, encouraging, and truly meets you where you're at. The members are all ages, and fitness levels, which makes the space feel welcoming and inclusive instead of intimidating. Plus everyone I've met has been kind and encouraging giving high 5's or a word of encouragement between workouts. This might sound like a paid ad lol it's not, Ark Fit sells itself. After just a few classes, you'll see what I mean. If you're reading reviews like I used to, wondering if this is the right place, I hope this helps. We all start somewhere. See you in class!

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Ark Fit
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CrossFit Fullerton - Coach Nathan working with one of our athletes.

CrossFit Fullerton

5.0(4 reviews)
2.5 mi

I can't say enough good things about CrossFit Fullerton! Nate, Jay, and Ivan are hands down the…read morebest coaches -- knowledgeable, motivating, and always making sure your form is on point. They know how to push you while still keeping it fun and safe. What really makes this place special, though, is the community. Everyone is so welcoming and encouraging that it felt like a second family to me. Every workout was tough but always uplifting because of the people around me. I had to leave only because I relocated to another city, and honestly, leaving this gym was one of the hardest parts about moving. I truly miss lifting with these amazing coaches and members. If you're looking for a CrossFit box with great coaching and an even better community, this is the place!

As a former member of different iterations of this gym stemming from many moons ago, I've seen it…read moreevolve through different ownerships and styles. I've appreciated each iteration but for certain the community has really been a wonderful, supportive, and amazing group of people that I have really only have positive sentiments about. Over time, as life would lead me around elsewhere, it seemed to grant me of an opportunity to revisit this gym. I was really amazed at the evolution of it, the facility seems a lot more modern, now there are opportunities to purchase different little beverages and apparel, and the programming seems great! Even looking at the programming it was very impressive, one rule of thumb i grew up with was to "consider the source" and if the owners are fit and that's what you want to do then maybe never hurts to check it out! Well... guess what, the owners are indeed fit. I love the fact that it is a local gym now owned by people I've known over time. As of right now, I am more of an occasional visitor and would be remiss if I did not recognize all of the hard work of the current ownership. I really like the programming, I love the color scheme, I love the options for visitors, and to be quite frank the pricing is very reasonable! So if you're in town and want to check them out maybe give them a try, they're right next to the train station I would say about a half mile away from the Fullerton Metrolink station, and although their parking lot is kind of small there is also street parking that is available. Overall it is a wonderful place to start exploring fitness and I am hopeful that your experience will be as positive as mine has been.

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CrossFit Fullerton
CrossFit Fullerton - Coach Brandon demonstrating form.

Coach Brandon demonstrating form.

CrossFit Fullerton - Coach Nathan doing a pre-class workout

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Coach Nathan doing a pre-class workout

FIT Brea

FIT Brea

5.0(122 reviews)
7.1 mi

I've been going to FIT Brea since last year and it's been an amazing experience. Andrew and the…read morecoaches design workouts that are challenging, well programmed, and never repetitive. The environment is supportive, and the programming is perfect for people of all ages and fitness levels. The workouts push you to become a better version of yourself. If you're serious about reaching your fitness goals, I highly recommend checking out FIT Brea.

I'm so thankful I found FIT Brea! Over the past several years that I've lived in the area, I've…read morebeen a part of various gyms (both chain and boutique) nearby. Having now experienced FIT Brea, I'm definitely kicking myself for not trying this gym out sooner. I've only done their group fitness classes so far, which range from 8-12ish people in size, and I'm looking forward to trying out the personal training sessions when my schedule opens up! Here are a few ways that make FIT Brea a standout: COACHING: The coaches here are the whole package! 1. They all have stellar credentials, with many of them holding advance degrees and multiple certifications. In short, they know their stuff. 2. At the risk of sounding facetious, I just want to make the point that the FIT Brea coaches actually coach. It might sound like a no-brainer, but it hasn't always been my experience that coaches do much more beyond demo-ing the moves and saying "good job" or "keep going" every few minutes, especially in a group class setting. Here, the coaches constantly move throughout the room to offer individualized pointers on form, differentiated movements depending on individual strength and mobility, alternative movements for injuries, and encouragement and motivation to keep pushing so I can get better and better. 3. They are all super patient, encouraging, and welcoming! PROGRAMMING: The programming for the group classes are thoughtfully and methodically designed. From what I can tell so far, the workouts are structured in mesocycles with a progressive overload pattern. This is important because if we do the same thing over and over, our bodies will adapt and we will not make appreciable gains over time. With progressive overload, our bodies are constantly challenged so that we can keep increasing strength and improving hypertrophy. COMMUNITY: The FIT Brea community is so nice and helpful. I felt welcomed by the coaches and the other patrons from day one. Several people who recognized that I was new introduced themselves and helped me find and set up various equipment. Others even put my plates and dumbbells back during transitions. Just last week, the whole class broke out into spontaneous applause and cheer when I pushed out that last rep of bench press, haha! The mutually encouraging environment really underpins the whole vibe and experience here. It's a special thing. MANAGEMENT: One of the things that I didn't realize would make a difference in my overall gym experience is having direct access to management/owner. In my past gym experiences, the questions/concerns I had would typically have to go up a chain of command before I got a response. Since FIT Brea is owner-operated, the patrons can directly talk to Andrew, the owner, who is so nice and provides exceptional customer service. SPACE/EQUIPMEMENT: It's spacious, well-maintained, clean, and an overall pleasant environment to train in. CLASS OFFERINGS: I'm a busy mom who works full-time hours plus daily commute. I'm thankful that classes are offered as early as 5am and as late as 6:30pm so that I can get my training time in! If you are looking for a gym where you can optimize and maximize your fitness goals (whatever they are), look no further because FIT Brea is it! I'm a serial Yelp sleuther and almost never write reviews, but my experience thus far has so far exceeded my expectations that I felt compelled to share this gem of a place with others!

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FIT Brea
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INTRVL Athletics - intervaltraininggyms - Updated May 2026

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