Marrs Fitness /CrossFit Iron Dust

This place is amazing!!! I found them on Mind Body, and just dropped in while in town for work. I am newish to Cross Fit so I know a little, but not a lot. Even though I was just there for the night, they took time to help my form, make sure I was doing everything properly, gave me recommendations for home stretches and even took time after class to show me!!! Cross fit can be intimidating already, add on being the stranger in town, but they made me fell right at home and welcome! I am not a huge Unilocal reviewer, but definitely wanted to give them a great review because even my home gym isn’t as great as the are! I will for sure be back next time I’m in town! Amazing! They kicked my booty too!

Love this place! Marrs Fitness (AKA CrossFit Iron Dust) has helped me in every aspect of my nutrition and athleticism. The people here truly care and help you achieve and surpass your fitness/​health goals. I would recommend this place to anyone who wants to get healthier, feel better and get stronger!

I found out about Marrs when I purchased a deal, it was for 10 Cardio Boxing classes for $ 27 and this is, hands down, the smartest money I’ve spent in a very long time. The facility itself is nice and clean and everyone is very friendly. I cant speak on the other classes they offer only on the Cardio boxing and its been so enjoyable. The coaches are knowledgeable and even when they are super crowded still manage a way to make sure that each person gets some personal instruction. I don’t love working out but this is the first thing I’ve found in a very long time that’s fun, and I know I am getting a good work out while doing it. I’ve been to several classes now and they always seem to be able to mix it up, doing something different each time so its never boring.
«Blue» has been the coach for the majority of classes I have been to, he’s always smiling but means business. He makes sure we are working on our technique, not just doing the motions, he is pushing us, making every moment count and smiles the entire time (his smile alone can make you come back, hahaha, just saying)
I plan to continue on with the classes once my intro offer is up, maybe try some of their other classes too, for sure I would recommend this for anyone looking for something different, its definitely motivated me again and I am thankful to have found them.
All the other coaches, fighters, owners, MF’ers etc in the class are always willing to help as well, this place is great!

You will never meet two people as dedicated to their clients as Tyler and Amanda Marrs!
There is literally something for everyone at Marrs Fitness (aka MF). Curious what CrossFit is all about? Want to improve your overall flexibility, strength, and cardio endurance? Interested in Martial Arts? MF can satisfy all of your fitness needs and/​or curiosities… Olympic lifting, TRX Suspension Training, Cardio Kickboxing, Jiu Jitsu, Muay Thai, Trail Run Meet-​ups, and so much more.
My personal favorite is Olympic lifting. I love testing my limits; and when I think I can’t go heavier or I can’t do another set, I go off and surprise the hell outta myself. It’s also pretty motivating when the person on the rack next to you is adding weight too. You wanna keep up. Don’t get me wrong. This isn’t the kind of gym where we are constantly trying to beat each other; but we are trying to push ourselves to be our absolute best. Sometimes that involves a little friendly, unspoken competition ;-)
Above and beyond the tough workouts, the educated coaching, and knowing I’ll always be called out when my ass isn’t low enough on a squat; I have met some really amazing people and have personally witnessed transformations happen in this gym. Nothing is more inspiring than seeing the people you have been working out next to for months, and in some cases years, finally accomplish a fitness goal or reach a new personal best. These experiences have built a morale and comraderie that is infectious and undeniable. I’m most grateful for that, more than anything else I’ve taken away from MF.
This really is a family; and anyone with an open mind and a positive attitude will fall in love with this gym. I highly recommend for everyone to check it out, and see what being an MF’r is all about! (See what I did there? HA!)

I have always been an athlete. In high school, I didn’t have to think about going to the gym because my coaches took care of conditioning during practice. Needless to say I gained the «Freshman Fifteen» my first year of college and realized that I would have to figure out how to work out on my own. I joined a gym and got a quick tour from a trainer, but that was it; I was on my own. I learned how to use machines and free weights by watching other people, reading magazines, etc. and I started to lose weight, but it was a slow process and I would often get discouraged or find any excuse to stop going to the gym.
Four years ago, I was at the heaviest I’ve ever been. None of my clothes fit and I fell into a depression and didn’t want to leave my house or socialize because I felt disgusting. I finally got tired of being a hermit and started going to the gym again. I lost some weight and started getting my self-​confidence back, but eventually I was looking for something more than just going to the gym and using machines; I didn’t want to lose my motivation.
I started a local boot camp with a friend, which is where I first met Tyler Marrs. We learned how to do suspension training with TRX, boxing, plyometrics, and started to use more than just hand weights. Every time a new concept was introduced, I wanted to learn more. Eventually, Tyler moved to a new location where we could start Olympic lifting. That’s when I officially became addicted! I started to see my body change again and I started to see muscles in places I didn’t know I existed; it was inspiring!
At this point, Tyler brought in his wife Amanda to help coach and train us, and started to teach us about proper nutrition. It was an added bonus to have a woman come in and show us how we can push ourselves. She didn’t just tell us what to do, she was right there with us demonstrating and working out! In 2013, after a lot of convincing from Tyler and Amanda, I started to attend one of the evening classes rather than the early morning class. That’s when I really started to see my body change and transform! The evening class were more advanced and the people who attended pushed and motivated me to step up my game. I wanted to be able to keep up and challenge myself to see if I could hang with the advanced group.
Needless to say, I will never go anywhere else! Marrs Fitness has changed my life and I will be eternally grateful to Tyler and Amanda for seeing my potential and continuously challenging me to be the best I can be. I don’t make excuses for not going to work out anymore, I want to show up and push myself. Together, Tyler and Amanda give you everything you need to succeed: motivation, inspiration, dedication, and most importantly constant support. They legitimately care about their clients; it’s not just a gym, it’s a family! Come check out Marrs Fitness… you will NOT be disappointed!

I have been taking classes at Marrs Fitness since September 2012. I have worked out my entire life from running to taking every class you could imagine at our local gym for 11 years. I tried Marrs Fitness after a friend recommended it and have never looked back. The workouts at Marrs are challenging and fun. Yes… fun. The best part is that you will never do the same workout twice. Every day is something different. There is no reason to ever feel intimidated, because the workouts can be modified to any fitness level. I have to modify my workouts and still feel like I worked incredibly hard!
Amanda, Tyler and all of their trainers are patient and knowledgeable. They work with each of their clients to be sure that there form is correct and that they get the best results from their time there.
As a mom I only have a short amount of time each day that I can devote to myself and my workouts. I am so grateful to have found Marrs Fitness. I absolutely love working out there and the feeling of accomplishment when I am done for the day!!!
Marrs Fitness by far offers the best workouts in Simi Valley. Try them, you will love it!

I can’t say enough great things about Marrs Fitness! My husband and I tried classes there on a «living social» deal almost two years ago. We loved it so much, we couldn’t bear to quit after our first month. We were both regular gym-​goers, ran the occasional half-​marathon or mud run, and thought we were fairly fit. When we tried the Marrs classes that incorporated lifting, functional fitness, and TRX suspension training, it was a whole new kind of workout! So exhausting and so fantastic! After that first month I developed abs like I’d only dreamed about. As we continued classes and began to progress with our strength and skills, I noticed so many things getting easier: lifting kids and equipment at work, carrying groceries, moving furniture-​everything.
Each new skill or achievement is not only a personal victory, but is celebrated by the whole gym. (Who knew I could do pull-​ups and double-​unders?! Still working on handstand push-​ups ;))
I love that my husband and I can go together evenings or on the weekend and our kids (6 and 9) are happy to play in the «kid’s room» and watch movies.
Tyler and Amanda (the owners/​trainers) are so knowledgeable and so skilled at programming and adapting workouts. I trust them training anyone from my mom to my kids. They are able to work around injuries and scale workouts for everyone to participate: from the newest beginner to the advanced athletes.
It is definitely an amazing gym family. Everyone there is so supportive, friendly and encouraging, especially to newcomers. It is not uncommon to find friends cheering you on to finish that workout. I have accomplished so much more than I ever could have by myself. After almost two years I am still challenged by each workout. I walk in each time and peek at the workout board and think «no way.» But each time I leave exhilarated and so proud that I finished.
We are so thankful to Marrs Fitness, they have truly changed our bodies and our lives! Get started now, you won’t regret it!

Tyler Marrs is great at what he does. The gym has a nice friendly environment that offers crossfit and muay thai.