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Iron Core - Oceanside

5.0 (8 reviews)
Closed 5:30 am - 9:00 AM, 4:30 pm - 7:00 PM

Services - Iron Core - Oceanside

Group fitness

Personal training

Virtual fitness classes

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4 years ago

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6 years ago

Wow. So awesome to finally build my core without hurting my back with endless crunches. Thanks Erica and Os! Highly recommend!!!

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Nicky Perry Fitness - 6 month transformation down:
 -15lbs
 -10% body fat
 -3.25" in waist
 -5" in abdomen
 -2.25" in hips
 -1" in thigh
 -0.5" in calf

Nicky Perry Fitness

(33 reviews)

I am so glad I found Nicky. At 68 I have lost and gained 30+ pounds more times in my life than I…read morecan count. Occasionally I hired a trainer, sometimes through a gym, sometimes not, but I never really felt any huge results. I started a walking 5 years ago and that has been good. Changing my diet to low carb and walking regularly, helped me lose 40+ pounds over the last year. Now I needed to build muscle, get toned, and work on balance and posture. My upper body is weak, I lost tone (and my butt) with this last weight loss. As I age I notice small losses in balance. My posture has been an issue most of my life. I did research. The first trainer I hired, who was less expensive, gave me cookie cutter exercises and didn't push me. Maybe he thought I was too old. Then I hired Nicky. She is not easy on me, but goes at my pace. If I can't do something, she modifies it so I can be successful and still get the benefits. I am amazed at every workout with her depth of knowledge. Working together we have uncovered some issues I didn't know I had and we are working to correct them. When I started having a weird issue, we both researched it and she suggested I see a PT to confirm what we both suspect. I like that she researched the issue and also that she knows her limitations. She says, " I'm not a PT. They study for years. But I know training. " I'm feeling stronger in just a few months. My posture has visibly improved. I didn't expect to see a difference so quickly. She takes measurements and checks for muscle increase periodically. It's not required, but I like to see data. I'm pretty knowledgeable about nutrition, but she made some suggestions. I lost a few more pounds, even though that is not my primary goal at this point. I just want to be stronger and more toned. I want to live healthy into old age and I believe having a strong body is absolutely essential. If you want results and not just go through the motions, give Nicky a shout. If you are willing to work and want to work with someone knowledgeable, she's a great choice. Her workouts are tailored to each client. She will make sure you are safe and provide encouragement.

I would definitely recommend Nicky for nutritional advice and assistance; she was able to fit me in…read moreat the last minute which I really appreciate. Nicky took the time to go over what my current diet was and how I could lose weight with some pretty simple meal adjustments she help set up a nutrition program through an app and we programmed in a sample day for me to start with. She was able to explain where my current meal routine was way too high in certain macros and why shifting and excluding items would help me to lose weight and be more healthy. Ultimately I would love to get some resistance training done with her but her schedule was full. I would highly recommend her for nutritional advice and the reasoning behind making the right choices!

MROC Training

MROC Training

(75 reviews)

Thank you MROC for getting us HYROX ready! I didn't even know about this place until a friend told…read moreme about about how they host simulations and train a lot of Hyrox athletes. I was silly and my first workout at MROC was a MURPH workout. Silly silly me. I haven't been that sore in a LONG time. I work out A LOT so for them to get me was a great thing. The workouts are challenging but do-able. You'll feel the burn but also the muscle growth. I'm not going to lie, I was initially intimidated going at first. I thought I was going to be surrounded by a bunch of yoked up athletes. But on the contrary! There are so many people of different shapes/sizes/ages/mobility. It was super inspiring to see everyone working out. I loved seeing all the parents/working people/ppl with goals, the whole spectrum just putting the work in! There is a PLETHORA of equipment. Everything your gym can dream of with a state of the arm stretching equipment upstairs too. If you're looking at a gym to start in the New Year, you've found your spot :)

If I could give more than 5 stars, I absolutely would. MROC Training in Oceanside is one of the…read moremost impressive, supportive, and high-quality fitness facilities I've ever visited -- and I've trained at many gyms across Southern California. I participated in their HYROX Simulation event, and the experience was nothing short of phenomenal. From the moment I walked in, the staff, coaches, and volunteers created an environment that was welcoming, motivating, and incredibly well-organized. They put so much care into planning the simulation, running each station smoothly, and making sure every athlete felt supported and challenged. The volunteers deserve special recognition -- these amazing individuals gave up part of their holiday to cheer us on, help run stations, and keep the flow efficient. You could feel the passion and community the moment you stepped inside. Their energy, attention to detail, and positive attitudes made a huge difference. As someone who trains for running, triathlon, HYROX, and obstacle-course racing, I can confidently say: MROC is built differently. This is the place for anyone serious about functional fitness or OCR. The facility is spacious, clean, and designed with purpose -- sled lanes, rigs, carries, walls, grip tools, cardio equipment, turf areas, and so much more. It is truly one of the best-equipped training centers for professional obstacle course preparation, HYROX-style workouts, and high-intensity hybrid training. I live in Orange County, and even though it's a drive, this gym genuinely feels like a second family. The coaching style, community atmosphere, and supportive culture remind me why places like this are so rare. I will absolutely be returning for drop-ins whenever I am in the area -- and possibly even weekly -- because the value of this environment is unmatched. For anyone considering: HYROX training Obstacle course racing Spartan or OCR certifications Functional fitness Community-driven workouts Simulation events to test yourself MROC Training is THE place to be. Their professionalism, expertise, and passion for helping athletes grow is next-level. I highly recommend this facility to athletes of all levels -- whether you're a beginner wanting to try something new or a competitive hybrid athlete looking to level up. Thank you again to the entire MROC team for hosting such an impactful event. You've earned a loyal supporter, and I can't wait to come back.

Crunch Fitness - Oceanside

Crunch Fitness - Oceanside

(153 reviews)

Jesus at Crunch is an outstanding staff employee. Always ready to help out with my questions, no…read morehassle, very friendly. Any day i see Jesus working, he is presentable. A fantastic member of Crunch. Makes every visit to the gym feel like 10/10.

Crazy seeing this rating. Since Anthony has taken over, this location has been truly amazing…read more 1. I've seen Anthony the GM truly want to help people reach fitness goals and if having the ability too, give great deals to people wanting to renew or become new members. I HATE salesmen, and tacky gym people trying to up-charge or sell something not needed or wanted. Anthony does NOT give that vibe at all. Very fun and professional attitude. You can even tell in his employees. They all give the presence that they actually like being at work, working for him and it shows how it is translated to the members. Now maybe for the high end gym fanatic they'll complain it doesn't have every bell and whistle to hit your random glute or specific shoulder muscle....for a quality gym, great pricing, really great staff and GM. You cannot beat Crunch Fitness in Oceanside. BONUS POINTS You truly can go there without headphones and be totally satisfied. They play really good music. Great selection of 90's to current R&B, hip hop, and even rock. My example is they went from I Luv Your Girl by The Dream, to Mr. Crowley by Ozzy Osbourne. I'm telling you they curate these DEEP cuts of artist that will have you groovin' all through your workout. A+ place

Kasia Fitness - Kasia Fitnees first results

Kasia Fitness

(24 reviews)

I've been in the process of changing my life with Kasia, both in training & somatic life coaching…read morefor about two months at this point and known her about five . The results are starting to show in all aspects of my life. It's a process & ultimately I have to put in the work. But Kasia is exceptional in her ability to keep you motivated towards personal growth. Always changing up what your doing . As of to date I've lost 6" overall & starting to burn fat & increase muscle. The value of what she offer is life changing ( How much is your long term health worth ? ) where she differs from most is she takes you where your at & encourages you to love yourself . Both in mind body & spirit as well as helping you to get there. I would highly recommend what she can offer you its a great value for what she can teach you if your truly looking to change your life. Thank you Kasia for everything. I'm looking forward to my future progress & feeling very motivated with your help.

I have worked out lifting weights before and was never able to really dial in on the right…read moreexercises and meal plans. I was fortunate enough to be referred to Kasia by a mutual friend and once I started training with her my body begun to change really fast. I am a very disciplined person when I want to be, so when I combined Kasia'a knowledge, guidance and understanding of the human body, mind and spirit I was able to become aligned and achieve me desired out come. Something else that Kasia was really able to help me with was a spiritual growth and over all well being. Every time I trained with Kasia I felt like i was getting combination of services/education at no extra fee, with everything from how to lift correctly, how to think correctly, how to eat correctly etc etc. Best money I've ever spent and I would leave every session a little more knowledgeable, motivated, Inspired and with a sense of accomplishment. Thank you Kasia

Iron Core - Oceanside - bootcamps - Updated May 2026

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