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    Fitness Underground

    4.9 (52 reviews)
    Open Open 24 hours

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    Services - Fitness Underground

    Personal training

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    Reviews With Photos

    Abe S.

    First off, I'm 32 years old. I consider myself pretty knowledgeable when it comes to dieting and working out. Yet, I've struggled for years to stay consistent with both. I've had a LA Fitness membership since 2009. So, I decided to search elsewhere than your typical large gym (e.g., LA Fitness, 24 Hour Fitness) in hopes of finding a solution. I searched for a local gym on Google, and Fitness Underground was the first to pop up. I'll admit, I was hesitant--I was so used to large gyms with every machine possible, even if I knew I would never use them, lol. I found myself scheduling a consultation with Ian, the owner. He's been my personal trainer since January 2024; it's now July 2024. I'll begin by saying Ian has enriched my knowledge of both dieting and working out. He corrected bad lifting habits that I never knew I had, which led to less stress on my body, fewer pains, and fewer injuries. All the "random" shoulder and back pain is no longer random or a mystery to me, but most importantly, a thing of the past. My dieting has improved tremendously since Ian and I started working together. Ian understands that everyone has different eating habits. We took the time to figure out what works best for my lifestyle, and within 6 months, I went from 218 lbs to 188 lbs. My wedding photos look great thanks to Ian and the people at Fitness Underground. Don't get me started on the environment--it's extremely welcoming. Everyone is so friendly and polite. It might come off as intimidating if you're not a powerlifter or someone who squats or deadlifts, but don't be. Everyone is a gentle giant--don't be scared. I can't express my gratitude enough! I highly recommend this place--give it a shot. Before and after photos attached!

    The front of the gym
    Jesse S.

    This is by far one of the best gyms I have experienced. The gym community is great no ego trips everyone is welcoming and will assist you if you need help with anything. They have a great group of personal trainers to help move you forward in your fitness goals. It's not your big commercial gym but they have plenty of equipment to use. it's open 24/7 365 days a year so no days off and no excuses so go sign up now.

    Up coming powerlifting meet
    Sam G.

    Awesome place to train. With amazing staff and community home of the Ugly and Proud Athlete.

    Fitness Underground

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    1 year ago

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    Ian H.

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    9 months ago

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    Ian H.

    Nany, thank you for the review! Keep up the great work!!

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    1 year ago

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    2 years ago

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    Ian H.

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    1 year ago

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    Ian H.

    Gaby, thank you very much! We are happy that you love the gym!

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    1 year ago

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    Ian H.

    Jesse! Keep up the great work! Thank you for the review.

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    1 year ago

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    Ian H.

    Hey Matthew! Thank you for the review!

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    1 year ago

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    1 year ago

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    Ian H.

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    1 year ago

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    Ian H.

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    2 years ago

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    1 year ago

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    1 year ago

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    1 year ago

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    3 years ago

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    2 years ago

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    Ian H.

    Thank you for the review!! We are so happy to hear of your progress!

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    2 years ago

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    Ian H.

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    2 years ago

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    Ian H.

    Haha! Love this. Thanks for the review, Jorge!

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    3 years ago

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    4 years ago

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    3 years ago

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    2 years ago

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    3 years ago

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    4 years ago

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    Ian H.

    Thanks for the review, Sevren! Keep up the good work!

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    5 years ago

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    Ian H.

    Thank you for the review, Bruno!

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    6 years ago

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    8 years ago

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    4 years ago

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    Ian H.

    Thank you, Alex. Keep killing it!

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    4 years ago

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    Ian H.

    Thank you for the review, Amber!

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    3 years ago

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    Ian H.

    Thank you for the review, Henry!

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    7 years ago

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    8 years ago

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    4 years ago

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    Ian H.

    Thank you for the review, Renato!

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    8 years ago

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    Page 1 of 2

    Ask the Community - Fitness Underground

    Is Fitness Underground a private gym?

    Yes, Fitness Underground is a private gym, family owned and operated. We cater to individuals who are looking to get away from the overcrowded & larger corporation gyms. We… Read more

    Hello, does your gym offer small group training?

    We specialize in personal training up to 2 people max.

    How much is a day pass?

    $25

    What are membership prices? I have a gym membership already, but I work out in the evening and they close earlier on weekends.

    Hey Aaron! Our most popular membership is currently $70 per month. This includes 24/7 access to gym. Please just make an appointment for your first visit which can be done through our website. Thank you!

    I would like to ask, for someone who wants to get back into working out, is this gym for me?

    All levels are welcome! If you are a beginner or just get back into it, we highly recommend working with one of our personal trainers. Please fill out the "Contact" form on our website and will set up a time to meet. Thank you.

    Is this facility following covid guidelines?

    View All 11 Questions

    Review Highlights - Fitness Underground

    I have been personal training with Marisa for a while and I have to say it's been the best experience ever!

    Mentioned in 10 reviews

    Read more highlights

    Chuze Fitness

    Chuze Fitness

    4.1(505 reviews)
    0.1 mi
    $$

    It's a bunch of bad bbl's in there thinkin they hot lol…read more Good gym tho, the staff is very nice

    Chuze Fitness - Rancho Cucamonga I walked into this location…read morewith my 4‑year‑old daughter and 13‑year‑old son, genuinely interested in becoming a member. Instead of being welcomed, I was immediately treated with disrespect and condescension. The front desk employee (a young man with a mohawk--didn't catch the name) opened the interaction with, "You're here for what?"--not hello, not welcome, not even basic courtesy. When I asked for a tour to compare prices before signing up, I was told they would not show me the gym unless I first purchased a childcare membership. It got worse. I was then told, "I don't think you'll even be able to afford it, so this isn't going to work out for you." That comment was completely inappropriate, unprofessional, and humiliating--especially said in front of my children. I left feeling judged and disrespected. Whether based on appearance or assumption, the interaction felt discriminatory and hostile, the exact opposite of what a family-friendly gym should be. Ironically, I choose to live humbly and do very well for myself--but no one should ever be spoken to this way, regardless of income, race, or background. You don't judge people by how they look. Save your money. For about $10 more per month, LA Fitness offers far better value, professional staff, and nationwide access--without the judgment or arrogance. Chuze Fitness Rancho Cucamonga needs serious training in customer service, inclusivity, and basic human respect.

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    Chuze Fitness
    Chuze Fitness
    Chuze Fitness

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    6th Sense

    6th Sense

    4.2(28 reviews)
    4.6 mi

    I've been meaning to leave a review of this gym for a long while now. I've honestly had nothing but…read moreamazing experiences being at this gym for the past 2 years. I currently have multiple gym memberships and this one tends to be the best out of them all and it's a hidden gem for sure. The gym is a mix for both personal training and a key fob access style gym for solo gym go-ers. One thing I really appreciate is the amount of equipment in the gym and the dedication to add more & more. Seriously seems like your money spent is put back into the place and that's something I don't see big corporate gyms do often. And speaking of big box gyms, the amount of times I've walked into my other gyms and walked out after 2 exercises due to crowdedness and waiting and went straight here after is insane but awesome to know when I walked into 6th sense it's pretty much a 10/10 solid workout when I'm done. Even if it were to be crowded at times, there's so much equipment that you can still have an awesome workout or not wait long. It's also because of this gym I was able to win my first men's physique bodybuilding competition this past May. It's open 24/7, has more than enough equipment in two different areas in the gym (including my new favorite brand Panatta), isn't as crowded as the rest, and has a great community. From my experience, everyone at Sixth Sense is pretty cool. The Trainers are doing their thing and seem respectful towards their clients and anyone in the gym. I high-key tend to keep to myself as the other gyms I have people that tend to talk to me a lot and not that that's bad, but I'd like to lock in when I go workout sometimes. That said, there have been trainers that see me come in regularly and tend to say hi and I appreciate that because that's just part of the welcoming community & environment that this gym seems to instill. I will say that there are people that record in the gym, myself included, with tripods and all that but should be noted that when I do see people recording, they respect the gym member first. I personally feel that there should be a safe place to record gym videos as there are people that do so to add attention to their business, brand, or personal use content. With respect if that bothers you, just know that I have walked in front of peoples camera set-ups unintentionally multiple times before and they didn't get pissed off or press you about it (not that it's right that they should) and have been really cool about it. This really does add to the mindset that everyone respects the regular gym go-er just trying to get their workout in first. Lastly, I appreciate the Owner for being very quick, efficient, and supportive when it comes to customer service. Whenever I reached out via text about any questions or issues with my account, he's been very quick and cool to work with and that is awesome to get that type of service nowadays. Super under-rated gym that deserves all the success in the world. Will recommend and keep coming for as long as I'm here!

    Terrible experience at this neglected gym!…read more I joined this gym on the beginning of this month (April ) and got my membership canceled by the owner 12 days later which I only used the facility 3 days to workout. I have multiple gym memberships from commercial to private gyms and this was a first. I always clean and unload the machines after each use and this day was not a different day. I was approached by the manager of the gym which is the owners brother in a disrespectful way, telling me to rerack the weights from previous machine which I clearly unload the machine, but the gym does lack on weights stations to unload to it, so I left on the side of the machine organized which he told me to put where I got them from, which was from walking around the gym grabbing from machine to machine and I told him that it doesn't make any sense when they lack on stations to drop the weights on it. Although I went back and did what he said. I pay to go there not to work there. 2 minutes later as you see the screenshot, the owner Mario texted me saying it is courtesy but them is rules which is not on the contract anyway. So they canceled my membership when I didn't even left the machines loaded or weights on the floor. Unfortunately this was a act of discrimination from the manager to me as a person as there was one other dude earlier time leaving all weights on the machines and nothing was said. I was going to cancel the membership on Friday due to this gym been neglected for long time. Machines are mostly ripped off , tapped or some broken. Machines are on top of each others or next to the walls with wires or ladders next to or impossible to load them, so many hazards. Bathrooms are dirty and trash all over the place most the time and barely anyone at the gym. Men's locker room is a mini one dirty with broken toilet and main door doesn't even fully close. What you see on IG are all filters and angles, they clearly misleading people, I joined online on their website from social media, as if I add gone see it before in person I wouldn't ever join it.

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    6th Sense
    6th Sense - Owner of 6th sense Mia

    Owner of 6th sense Mia

    6th Sense

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    The Camp Transformation Center

    The Camp Transformation Center

    4.7(56 reviews)
    8.0 mi

    This gym is completely unrecognizable from what it used to be. What once felt like a true community…read morenow feels like a corporate rebrand that forgot the people who built it. The culture has shifted away from the diverse, welcoming vibe that reflected Ontario and into a loud, performative, hyper- bro, heavy metal/rock atmosphere. It's not technically "bro only," but if you're not part of that energy, you're effectively invisible. When new ownership came in, they fired the long-time employees who made the gym feel like home, and since then the environment has become uncomfortable and oddly transactional. The vibe now feels performative rather than genuine. The trainers are loud for the sake of being loud, hyped to an almost cracked-out level that feels disingenuous instead of motivating. The favoritism is impossible to miss. I'm here weekly, and Miguel, the owner, has never once acknowledged my existence. No hello. No nod. No eye contact. Meanwhile, he's fist-bumping the men on either side of me like it's a frat boy reunion. Every. Single. Time. As a woman, it's hard not to see the pattern. He'll happily engage with the conventionally attractive women, but if you're just a normal person trying to work out, you're ignored. If you're not ripped, or radiating alpha energy, you're background noise. It's giving used car salesman confidence with a dash of outdated male chauvinism.. A gym should empower people and make them feel welcome, not dismissed or overlooked. It's genuinely disappointing to watch a once inclusive space push away the very community that made it successful in the first place. P.s. please diversify the music again! We need some reggaton, rap, and EDM... It's missing some Ontario culture.

    The 4 PM class with Autumn definitely caught my attention. I usually work out with my headphones in…read moreand tune everything else out since I'm not in the class, but I forgot my headphones this time, and her energy still came through. The workout itself looked intense and pushed the class to the edge. No one was coasting, and the pace stayed high the entire time. Autumn stayed locked in with her group, motivating and pushing them without letting the energy drop. You could see how much the class fed off her. Her motivation felt real, not forced, and it showed in the effort everyone was giving. Even just watching from the side, it was obvious her energy is unmatched. She's the kind of coach that makes people push harder and stay engaged.

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    The Camp Transformation Center - Awesome fit fam

    Awesome fit fam

    The Camp Transformation Center
    The Camp Transformation Center - Me and hubby at the gym!

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    Me and hubby at the gym!

    Fitness 19

    Fitness 19

    4.1(275 reviews)
    5.2 mi

    Interesting reviews...I've never had any of these issues. I've been a member at several different…read moregyms over the past twenty years. You are going to spend more money and have more issues at another gym. Trust. The pregnant manager goes around and sanitizes and vacuums--that's not going to happen at other gyms. Staff is super nice and friendly. The gym does run its A/C. Thank you for not being cheap because I don't know who wants to workout in a hot and stinky gym. Members keep to themselves--reasons why I have left other gyms. I'm giving it a 5 (but really a 4.5). I wish they had more/better equipment. They really need machines similar to Gold's Gym. Gold's has more leg machines but their stuff is always broken lol. Fit 19 has some repetitive and hardly-used equipment. I love that you can go into the studio and access all the kettlebells/weights/bars/mats This is usually restricted in other gyms. They often do not let you use weights in the studios at other places. The turf area is nice as well and is always kept clean and organized. People don't leave weights all around the gym--like at other gyms. The equipment is rarely broken like at other gyms with higher price points. You'll be lucky if LA Fitness' cardio machines are working. The spin bike room is so nice compared to other gyms as well. There's a lot more bikes compared to other spin rooms. All in all, you get what you pay for and in my opinion, I'm getting more than what I pay for--$10 a month. It's not a high-fees micro-managed establishment like most lower priced gyms.

    I went in to try out the facilities using a 3-day pass, but they refused to honor it and told me I…read morehad to pay for a day pass if I wanted to work out. Obviously, I refused to pay and decided to leave instead. The employee who assisted me wasn't terribly rude, but they were very indifferent and had zero customer service skills. Also, after reading other reviews about people having issues with unfair cancellation fees, I'm honestly glad things turned out this way because it saved me from making the mistake of signing up here. I do not recommend this place at all.

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    Fitness 19
    Fitness 19
    Fitness 19

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    24 Hour Fitness

    24 Hour Fitness

    2.9(319 reviews)
    5.8 mi

    This 24 location gets the job done, but it attracts lots of, let's just say, "filmography". It…read moreisn't small, but manages to feel cramped. The members here seem to not care about gym etiquette either. At times, It doesn't seem well kept in terms of hygiene. As always, it can still get the job done.

    Been a faithful member since 2017 when my family and I first moved out to the IE. Back when the gym…read moreuse to be 24 hours pre Covid of course. I love this gym for so many reasons aside from it's convenience of being close to home and the helpful staff. HOWEVER, just as there is good there is (dare I say) bad. Just as a disclaimer, I waited a whole month (since the new year) before deciding to write this review because I wanted to see if anything would change without there being a need to mention this bad...especially because I got some feedback from other faithful gym members who are just completely disappointed, dissatisfied and just turned off by what I am about to share... Out of the 41 cardio machines (this is just the treadmills and stairmasters), there several machines do not even work or are out of order. To be honest, thats not even pointing out the ones that are completely shut off or do not have a proper out of order sign. Don't get me wrong, the renovations are nice and the gym itself looks better but the broken machines are not a good look. Like all that money spent on renovations but y'all machines still not up to par?? All that money spent to change up the gym up but it doesn't mean a thing if the gym isn't up to par with its equipment. Not a club location you want to go to if you are just trying to do some cardio, or even try to finish off with it because youre either waiting forever and day or the machine you thought was available is actually broken and/or off. Overall, the waits are ridiculous and some machines do not work with no signs whatsoever from management :( Be for warned to all my newbies or visitors. If you're really trying to lock in without all the hoopla you're better off visiting the Eastvale location which i may add also got a new renovation! I really wish management would do something about it because its been a whole month since the new year and it seems like more machines are breaking down or the same ones haven't been even noticed. It breaks my heart writing this but I feel it is only right y'all should know! Im still hopeful management gets it together and gets the ball rolling on fixing our machines again!

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    24 Hour Fitness
    24 Hour Fitness
    24 Hour Fitness

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    Fitness Underground - gyms - Updated May 2026

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