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    Fitness 100

    4.5 (31 reviews)
    Open 9:00 am - 9:00 pm

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    Be at 29.7 percent body fat before training
    Steven L.

    I grew up in Diamond Bar and I've tried all the big and small bouquet gyms around Diamond Bar and Walnut (I don't want to name names but if you are from here, you would know which ones I'm talking about). Then I found fitness 100. Fitness 100 is a gym that has a nice environment and nice people inside. If you're just getting started to fitness and worries about ego at the gym, Fitness 100 will make you feel right at home and non of that ego and face things exist here. I started at 29.7 percent body fat and obese to now. Feels very comfortable here focusing on my own training with my trainer. There's about 7 regular trainers that trains clients here. EVERYONE of them and I mean EVERYONE is really nice and friendly. There's also a Zumba and yoga room in the back of the gym that can let clients stretch, and do other activity a besides weight lifting. And last things, the owner Steve. He's the icing on top man! He's so sarcastically funny it's unbelievable ;) Give fitness 100 a try guys!

    Dong L.

    My friend and I have been coming here everyday for a month now! We really like the place, its clean and fits our needs! We start seeing our body transforming already! highly recommanded for people who wants to make a change in the way they look!

    My favorite work out piece!

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    11 months ago

    Helpful 4
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    2 years ago

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    3 months ago

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    2 years ago

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    2 years ago

    i like this place because it teaches me how to exercise. I would highly recommend this because the fitness trainers makes working out fun.

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    3 years ago

    Working out with Lucio is great, he helped me to get back on track and building a healthy lifestyle

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    Alexis C.

    Happy to have you at our gym!

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    2 years ago

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    3 years ago

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    Alexis C.

    Glad to hear you like the gym, it’s always a blast training you!

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    9 years ago

    Helpful 5
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    4 years ago

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    Alexis C.

    We're glad you enjoyed it, thanks for coming in!

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    10 years ago

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    Steve L.

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    11 years ago

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    6 years ago

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    8 years ago

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    9 years ago

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    10 years ago

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    9 years ago

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    10 years ago

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    Steve L.

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    11 years ago

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    10 years ago

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    10 years ago

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    12 years ago

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    Steve L.

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    11 years ago

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    11 years ago

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    Steve L.

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    11 years ago

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    11 years ago

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    Steve L.

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    10 years ago

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    Ask the Community - Fitness 100

    Confused with the pricing, how come it's only 15 dollars a month with trainer and 40 without trainer? Is this correct?

    Thanks for the question! The original price is $40/month if you want to use the gym without purchasing personal training sessions. We offer an ongoing discount if you do purchase sessions.

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    Review Highlights - Fitness 100

    When you're like, "Oh my god I could've bought like 10 boba drinks with this session," then you will work your ass off to make the most out of it.

    Mentioned in 2 reviews

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    Curl Fitness Diamond Bar

    Curl Fitness Diamond Bar

    3.8
    (63 reviews)
    2.6 mi

    Felt the need to leave a review because I've had nothing but a great experience here…read more My little brother and I were looking for a gym after moving back home, so we tried several in the area before checking out Curl. We met with the general manager Gustavo, who was very friendly and accommodating in helping us find the membership that made the most sense. I didn't end up getting my own membership since I'll be moving out again in a few months and Curl doesn't have many locations, but I've been able to come as my brother's guest. We even got my mom to sign up which says a lot given she's pretty high maintenance about cleanliness and wasn't going to the gym at all before this. Now she goes almost every day and loves the zumba classes. In my opinion, this is the best all-around gym for the price. It's cleaner than 24 hour and LA fitness, it's never so crowded that I'm waiting forever for equipment, and unlike planet fitness, it has a great selection of free weights. They also have newer equipment including a hip thrust machine and pendulum squat. I used to go to 24 hour whenever I came home on school breaks, and I've never been able to grab a spot at the squat racks with bumper plates. At Curl, I've never had that problem, even though I come almost every day. On top of that, Gustavo and the rest of the staff have always been welcoming and helpful. Overall, it's been a really positive experience and I'd definitely recommend Curl to anyone looking for a solid gym!

    I visited Curl Fitness for the first time today, and I have to give a huge shoutout to Gustavo…read more From the moment I walked in, he made me feel welcome. He took the time to show me around the entire gym, answered every question I had professionally, and even gave me a complimentary guest pass even though I'm not from the area. The gym itself is clean, well-equipped, and has an awesome atmosphere. The only reason I didn't sign up for a membership is because there isn't a location that's convenient for where I live. If there were, I'd join without hesitation. Gustavo's professionalism and hospitality made an already great gym experience even better. Highly recommend both Curl Fitness and Gustavo if you get the chance to work with him.

    Photos
    Curl Fitness Diamond Bar
    Curl Fitness Diamond Bar
    Curl Fitness Diamond Bar

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    F45 Training Diamond Bar

    F45 Training Diamond Bar

    4.9
    (56 reviews)
    2.9 mi

    I've really fallen in love with this style of training. It's nice compared to going to a gym for me…read morebecause I don't have to think. I don't have to worry about whether the squat rack is open or if the machine i want is taken. I don't have to think about what body parts to target. I just have to show up, do the exercises with everyone else and just focus on getting better at them. Everyone here is really nice and supportive especially the instructors Sherry and Vicky, and you'll definitely get stronger if you keep going. I typically go once or twice a week, it's all the exercise I realistically get nowadays and yet I've actually gotten noticeably better cardio and strength. If you're on the fence about it I'd say give it a try. The classes are honestly hard but you can take it at your own pace, and it only gets easier. One thing I love is that there's a sense of teamwork even if you're doing your own workouts. It makes me work harder seeing other people try hard. Overall definitely worth it

    After years of ignoring my husband's attempts to get me to exercise, a friend finally forcibly…read moredragged me to a gym. I tried a variety of small Gyms and studios before discovering F45. The first thing I noticed was how friendly both the staff and other exercisers were. The next thing I noticed was that the music was super fun (think 90s-early 2000s hits). Finally, I realized F45 was the best for me because there's so much variety and constant movement, I don't have a chance to get bored! I only have one day per week I can consistently commit to exercise, and the program/equipment is different each time. Shout out to Vickey and Berry, who are very encouraging and energetic. Thank you for motivating me and helping me feel stronger.

    Photos
    F45 Training Diamond Bar
    Mark Wahlberg at F45 Training
    Mark Wahlberg at F45 Training
    Mark Wahlberg loves F45

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    Mark Wahlberg loves F45
    Planet Fitness

    Planet Fitness

    4.0
    (63 reviews)
    1.8 mi

    First-time visitor to the location, and I was impressed…read more This gym is large and offers members everything they need for a great workout. There are numerous types of cardio machines, free weights, many types of weight machines, a stretching room, a quick workout area, a massage and spa area, clean restrooms, and locker room areas. The staff members I came in contact with during this visit were extremely friendly and helpful. The gym itself was very clean, and great energetic music was played on the overhead speakers. My workout and visit here were very positive.

    I can honestly say that Planet Fitness is the cleanest gym with the best service of any I've been…read moreto in this area. Did you know they actually lift up the treadmills and other machines every month just to clean underneath them? They use foam cleaner on all the equipment every single day, and the restrooms are guaranteed to be scrubbed with disinfectant first thing every morning. They even use high-pressure power washers to clean the showers! ​I can say with full confidence that it's as clean as my own home. Even the massage chairs sometimes carry the fresh scent of cleaning solution. As for the staff, they are incredible--always greeting you warmly. You can tell the employees have a great relationship and truly treat the place like home; some have even worked there for years. ​There's absolutely nothing to complain about. Even the members there are high-quality and make sure to wipe down their machines after use. I also have a membership at Curl Fitness--and while their facility is newer, their equipment is filthy and covered in dust; some machines even feel sticky to the touch. Plus, the AC at Planet Fitness is always ice-cold, whereas Curl tries to save money by not running the AC in the winter, making it uncomfortably hot inside

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    Planet Fitness
    Planet Fitness
    Planet Fitness

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    24 Hour Fitness - City of Industry

    24 Hour Fitness - City of Industry

    3.0
    (527 reviews)
    2.2 mi

    At the times my cousin and I went around 7 am or 1 PM, there were plenty of treadmills and stair…read moremasters available. Limited on dumbbell selection but we made do. Plenty of machines to mix and match your workouts.

    This location is extremely poorly managed. The General Manager demonstrates a complete lack of…read morecustomer service and professionalism. Steam and sauna rooms are shut down with less than five minutes' notice -- often just a paper sign taped to the door minutes before they enter the room... and while the heat and steam are turned off immediately, even when the rooms are full of members. There is no verbal announcement, no reasonable grace period, and no consideration for members who are actively using the facilities for post-workout recovery. Members are simply forced out mid-session so cleaning can begin. That is not customer service -- that is disregard. What makes this even more frustrating is that the steam room, sauna, and bathrooms at this location are consistently dirtier than other 24 Hour Fitness locations. Cleanliness does not appear to be proactively maintained throughout the day, yet management suddenly demands immediate shutdowns at peak usage times. Why can't cleaning be scheduled late at night or early in the morning when the facility is empty? Why shut down rooms when ten or more paying members are inside? A customer-centric manager would communicate, give reasonable notice, and plan maintenance around member usage -- not inconvenience an entire room without warning. Instead of listening to members, the GM argues with them and insists the rooms "need to be cleaned right away," regardless of how many people are still using the facility. Turning off the power immediately without allowing members to finish is dismissive and unprofessional. This is not how a well-run facility operates. It reflects poor planning, poor communication, and a lack of leadership.

    Photos
    24 Hour Fitness - City of Industry
    24 Hour Fitness - City of Industry
    24 Hour Fitness - City of Industry

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    UFC GYM City of Industry

    UFC GYM City of Industry

    3.9
    (181 reviews)
    3.8 mi

    I've been to plenty of gyms over the years, and good customer service isn't as common as it used to…read morebe. I wanted to recognize Myla at the front desk because she did an outstanding job. She answered every question I had clearly, and never made me feel like I was bothering her. What stood out most was that she actually took the time to have a conversation instead of just rushing me through. By the end of it, it felt like I was talking to an old friend. That's the kind of service people remember. UFC Gym is lucky to have an employee like Myla. If every business had someone with her attitude and work ethic at the front desk, there'd be a lot more happy customers. Keep up the great work.

    Shout out to coach Ricky in the 6am kickboxing he has done such a amazing job teaching all of us…read morein class and keeping us all engaged he has a great work out plan along with keeping our reflexes up with using the pads such a fun morning class Another great two coaches are Martha 6am hiitt and Nadia 6am hitt and boxing these girls are so awesome they have helped me push myself they both are constantly changing their class routine to keep it fresh and keep us on our toes we never know what our workout will be we all have such a blast in their classes and they keep us in shape thank u UFC gym for having some amazing staff Also the front desk am are so so kind every single time I walk in they always say hi it's very nice to walk into a gym like this I'm very happy here

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    UFC GYM City of Industry
    UFC GYM City of Industry
    UFC GYM City of Industry

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    Fitness 100 - healthtrainers - Updated August 2026

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