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    F45 Training 4S Ranch

    5.0 (41 reviews)
    Open 5:00 am - 6:30 pm
    Updated a few days ago

    Services - F45 Training 4S Ranch

    Group fitness

    Virtual fitness classes

    F45 Training 4S Ranch Photos

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    The actual lid of a F45 shipping crate signed by the F45 family :)
    Chris B.

    Looking for a HIIT/Circuit workout with a predefined exercise routine that will test your physical and mental limits? All packed in a 'functional 45' minutes? F45 is the answer! The workouts are frequently changing so you (and your muscles) never get bored. Mon/Wed/Fri are cardio days where it'll feel like your heart is going to jump out of your chest and Tues/Thurs are resistance days that engages a plethora of muscle groups where you'll feel a solid burn. Of course, all this is only possible if you have that mental grit to maintain a high intensity and push through the pain. But don't worry, the helpful staff, music, and even the other F45ers will help encourage you along the way. F45 provides the ideal environment to kick start, elevate and maintain your fitness lifestyle. F45 4S Ranch has the most spacious layout among the other F45s Ive been to. They have a spacious front lobby with a desk area, cubbies to place your belongings and an area to stretch/foam roll. The gym floor is roomy as well which provides enough space between exercise stations to avoid getting in the way of your neighbor and/or paired partner. In addition, the entire venue looks, feels, and smells prestine everytime I walk in. The equipment and gym floor are consistently sanitized after every class. As for the staff, they're all very motivating and energetic and will spend the time to help you through the grueling routines. Also, if you're new to exercise and F45 in general and the exercise video/demos (played during the entire class to guide the workout routine for the day) aren't sufficient, they will help guide you through the workouts to ensure you're doing the exercises properly.

    Inside lobby
    Annemargaret B.

    This is not the place to come dressed glammed in your favorite outfit and think you are going to stay cute. The trainers are here to make sure you get a good workout where you are dripping with sweat. So if you think sweaty clothes are the bomb, you have hit your mark. You may often end up laughing at yourself... either due to doing something new or not being able to do it at all. The later was me! It goes to show this is a program I should be doing. In fact, maybe you should too! Remember all this happens in 45 minutes. Come break out in a sweat with some sweet music and new friends. Thank you for opening the 4S Ranch aka Del Sur location.

    Blaise B.

    11 months ago I signed up for F45. It was not the first time I have tried a fitness routine, but it was most definitely the first time I stuck with it. Now over 200 classes later it has become a part of my daily life. The Jason and Kara (the owners) are great, and the trainers are incredible. They are super positive, and they take time to work with all fitness levels. I definitely recommend this place!

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    My favorite workout! The coaches are amazing and the workouts are incredible. So thankful that F45 is finally nearby!!!!!

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    Page 1 of 2

    Ask the Community - F45 Training 4S Ranch

    Can you shower at this location?

    Hello Whitney sorry for the late reply. Unfortunately we do not have a shower. We do offer a 5:15am and 6:15am class. Most of our members have an opportunity to get back home or head straight to work. We’d love to have you in to check the… Read more

    Don’t See Your Question? Ask Away!

    Review Highlights - F45 Training 4S Ranch

    A huge shout out to Cara, Coach Cash, Jason, Nick, Nikkie, Amy, Hailey and anyone else I'm missing.

    Mentioned in 8 reviews

    Read more highlights

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    F45 Training Rancho Penasquitos - My daughter and I working out together

    F45 Training Rancho Penasquitos

    5.0(36 reviews)
    4.0 miRancho Penasquitos

    Joined in August 2024 and haven't stopped since. Four times a week, consistently…read more The coaches and the community are the main reason. There's something about the energy in that room that makes you want to actually try. When everyone around you is putting in work, you just match it. The music is good too. Sounds like a small thing but it makes a difference. So does the AC -- especially on a hot day. Strength-wise I'm noticeably stronger than when I started. Still getting challenged which is the point. If you're thinking about trying it, just go. It's hard to explain until you're in it.

    I've been a member of F45 Training Rancho Peñasquitos since 2019, and it has truly been a game…read morechanger for my fitness journey compared to my previous experience at 24 Hour Fitness. Each session is a complete, functional 45-minute workout that changes daily--no two classes are ever the same. The circuit-style HIIT format keeps you moving efficiently from station to station, so you're never waiting around or competing for equipment like you might at other gyms. Every class is supported by one to two knowledgeable coaches who demonstrate movements, ensure proper form, and provide constant motivation and accountability both inside and outside the studio. What truly sets this location apart is the close-knit community. You see many of the same members regularly, creating a supportive environment where everyone encourages one another. I've even made lifelong friends here. I highly recommend stopping in for a trial session--you won't be disappointed.

    Photos
    F45 Training Rancho Penasquitos
    F45 Training Rancho Penasquitos
    F45 Training Rancho Penasquitos

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    Fit Body Boot Camp - Poway

    Fit Body Boot Camp - Poway

    4.3(11 reviews)
    6.5 mi

    Bait and switch marketing. FBBC Poway offers a 6 week "free" class, once you're there it becomes a…read more$500 program that is "refundable" or partially refundable. If you're at a normal BMI they set the goal to 6% body fat and of you're above normal you lose 20 pounds. They have no standard of measurement prior to the first or last measurement and the device they use has a margin of error of 3.5-4.1%. Then when don't reach the goal, they do not honor a partial refund and only offer a credit to continue. I went from 199 to 187.4 in 6 weeks. The device said I lost 1.6% body fat and it increased from the prior two weeks each week. Mathematically it makes no sense. I would have to have lost 4.2% of muscle and water over 6 weeks; a total of 8.2 pounds of water and muscle. With that being said, if you follow the program you will lose weight. If you're looking to commit for 6 months, the initial $500 will get you another 5 months and may be worth it to you. I was looking for a 6 week program to get me back on track after breaking my leg, not false advertising and forced membership or an expensive 6 week program. Just keep in mind thos program is 90% diet based. Lean protein, vegetables, and very limited carbs; no sugar, or alcohol.

    I'm updating to four stars because the owner reached out and seemed to be honestly sorry what…read morehappened. He was very kind and offered to have me go in and check the gym out. he was also very apologetic for what happened. I do think the new owners are way cool and I'm sure anyone will agree if they check them out. Best wishes to the gym and everyone in it!

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    Fit Body Boot Camp - Poway

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    Underground Fitness

    Underground Fitness

    5.0(8 reviews)
    17.5 mi

    I cannot say enough amazing things about Lindsey and Underground Fitness as a whole. She has…read morecreated an environment that is welcoming, uplifting, and incredibly supportive. Shes built such a positive culture where people cheer each other on, celebrate wins (big and small), and genuinely want to see each other succeed. It feels like a community, not just a gym. Working with her has been one of the best decisions I've ever made for myself. She has pushed me in ways I didn't know I needed, but always with compassion, encouragement, and deep understanding. She pays attention to form, mindset, and personal goals. My confidence has grown so much over the past year. I feel stronger, more capable and doubt myself far less then I did before in many ways. If you're looking for a trainer who truly cares, knows her stuff, and a gym that feels fun and motivating then you found it. Highly, highly recommend!

    I don't even know where to begin with Lindsey and her amazing gym. Lindsey has established a truly…read moresupportive, kind and encouraging environment. She will push you harder than you have ever been pushed and she believes in you even when you don't believe in yourself. If you are looking for a personal trainer, I cannot recommend her enough. Whether you have been working out for years or you are new, she welcomes all with open arms. She focuses on each individuals goals and caters your training with your specific goal in mind. I began in July and Lindsey and the community in this gym have truly changed my life and pushed me to be more confident in my skin, believe in myself more and have taught me that I am so much stronger and capable than I think I am. She creates long lasting healthy habits that are realistic. She truly cares so much about the people that enter her gym and you become apart of the Underground Fitness family. I'm so happy I found this community. I couldn't recommend a better gym to start your personal training journey!!!

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    Underground Fitness
    Underground Fitness
    Underground Fitness

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    F45 Training North Park

    F45 Training North Park

    4.8(85 reviews)
    18.6 miNorth Park

    I've been a member since 2022 and I really enjoy working out here. I came in knowing no one and…read moreended up with some pretty awesome friends. The friends I've made are what push me to come as much as I do. The coaches are great too! At 6am is Coach Kat and Coach Coop and they are funny, knowledgeable and great at getting me to lift heavier than I think I can. The only barrier I have with more of my friends coming is the cost, but it truly is an investment in myself and my health. Come check it out and tell them Alison sent you! ;)

    If you want an easy workout, don't come here. Maybe take a walk instead. If you want to have the…read morehardest workout of your life and actually see results, look no further. I've taken group workout classes at different gyms, but nothing compares to the workout I get at F45 North Park. First off, this is their top ranked location in the US, and now I know why. This place buzzes with good energy and great workouts! The coaches here are the big difference. Coach Coop and Coach Kat are phenomenal! I thought I was going to pass out about 3 times in my first class, I loved it! It's only been three weeks and I am already seeing a massive physical difference. How it works is they have different stations set up, and you go from station to station with your pod. You do a quick warm up, the work out, and then a cool down. Coach Coop is as motivating as it gets. When he tells you to keep pushing you keep pushing! If you want to feel like Rocky Balboa is in your corner, lace them up and run it!

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    F45 Training North Park
    F45 Training North Park - J9 signing the wall for her 150th class!

    J9 signing the wall for her 150th class!

    F45 Training North Park

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    Sweat Circuit - Otay Ranch - This is my Coach Dari

    Sweat Circuit - Otay Ranch

    5.0(26 reviews)
    29.5 mi

    I use class pass to go here 3x a week and I love it! It's such a challenging yet fun environment…read morewith the best music playlists. My friend recommended it to me since I've been wanting to get back into strength training after giving birth a few months ago. The trainers are incredibly friendly and helpful, and help with form or any necessary modifications. I'd say about 10-20 people go per session and it's broken up into sections so at most you'd be with about 4-5 people in each circuit. I was intimidated at first but everyone is supportive and just on their own fitness journey. There are days that focus on lower body, upper body, or full body, with some cardio as well depending on if it is a "circuit" vs a "strong" class. There are many available times to go whether it is in the morning or evening. What's also a bonus is parking is not an issue since it is in a plaza. Highly recommend!

    The best gym I've ever been to!…read more Sweat Circuit Otay Ranch is on another level From day one I felt super welcomed -- the community is amazing, everyone motivates each other, and the vibe is just so good! The coaches are the best -- especially my coaches Tristan, Dari, and of course Kai! They're always supportive, full of energy, and truly inspiring. Every class is different, fun, and really makes you sweat but you enjoy every minute of it. And I can't forget Michelle, the fabulous owner -- she makes everyone feel welcomed and fabulous! I honestly love this place and recommend it 100%. If you're looking for a gym where you feel like part of a family and see real results, this is the one!

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    Sweat Circuit - Otay Ranch
    Sweat Circuit - Otay Ranch - Early morning grind!

    Early morning grind!

    Sweat Circuit - Otay Ranch

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    CrossFit Sun - Our charity events!  #CFSBFB15

    CrossFit Sun

    5.0(96 reviews)
    3.0 mi

    The Strong Start Strength Foundation Program is an excellent starting point for anyone new to…read morestrength training. Most of us don't grow up understanding how muscles function or what proper movement should feel like, and this workshop truly opened that door for me. After the session, I gained a much stronger awareness of correct form and can now recognize and correct my own movements during workouts. What made the experience even more impactful was Jen's approach as a trainer. She is incredibly patient, pays close attention to each trainee, and genuinely listens to everyone's concerns. Since every person experiences the same movement differently. Some find it intuitive, while others struggle to coordinate it, her ability to adapt her guidance to each individual makes the learning process feel supportive and accessible for all. Besides the foundation group training, my husband and I also do personal training sessions with Jen. These sessions are fully tailored to our individual needs. We discussed our goals and daily movement concerns with her, and she designed a program that addresses both of our issues, even though our targets and challenges are completely different. My husband, for example, used to experience foot pain after just a 30‑minute walk. Jen pinpointed the root of his problem and introduced specific exercises to help him retrain his movement. By the third session, he already noticed a huge improvement. He now understands how to engage the right muscles when he walks and can walk and run long distances without pain - something that had bothered him for years.

    Jen is awesome!! She makes every workout fun and keeps me motivated. She's very knowledgeable and…read moreexplains everything clearly, which makes me feel more comfortable and confident in the gym. Highly recommend the Strong Start program!

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    CrossFit Sun - Our gym motto is "Fun and Easy!"

    Our gym motto is "Fun and Easy!"

    CrossFit Sun - This is what support means at CrossFit Sun.

    This is what support means at CrossFit Sun.

    CrossFit Sun - CrossFit Sun San Diego

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    F45 Training 4S Ranch - intervaltraininggyms - Updated May 2026

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