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CrossFit Mischief | Best Gym in Aurora, Naperville & Oswego
Since 2016, CrossFit Mischief has been helping people in the Fox Valley area—including Aurora, Naperville, and Oswego—get stronger, move better, and feel amazing. Our expert coaches lead high-energy CrossFit workouts and strength training, focusing on functional fitness for all levels, from beginners to experienced athletes. Whether you want to lose weight, build muscle, or simply enjoy getting fit, you'll find a welcoming community ready to support you. Come try a class and see why CrossFit Mischief is more than just a gym—it’s your fitness family!
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Reviews
Jack Schlenker
★ 5
I recently restarted CrossFit after a 6 year hiatus. I tried several different gyms, but just couldn’t find my community… until I walked into CrossFit Mischief.
This is a great group of humans all around. From the coaches to the members. Everyone is so nice, and it makes you want to come in as often as you can to spend time achieving your fitness goals with them.
I am so excited to continue my journey back to strength and endurance at Mischief. You should too!
Source: Google
Cindy Anne
★ 5
I dropped in while visiting from Phoenix. Coach Alex was amazing, so knowledgeable and made class so much fun! The gym is spotless!✨ The members were so helpful and friendly, you can really feel the sense of community CrossFit Mischief has from the second you walk in the door. I will definitely be dropping in next time I am in town. Thanks for a great workout while on vacay!
Source: Google
Manikandan Palaniappan
★ 5
I joined this CrossFit Mischief about a month ago and I’m really happy with the experience so far. The atmosphere is positive, motivating, and very supportive. Big shout-out to the coaches — Tobias, Arianne, and Christie — they’ve been amazing!
As a beginner, I appreciate how the workouts are thoughtfully modified to my level, while still encouraging me to push a little further each time. The support I’ve received has given me a lot of confidence, and I already feel like I’m on track toward reaching my goal of losing weight.
Highly recommend this place if you’re looking for guidance, motivation, and a community that truly cares about your progress!
-Mani
Source: Google
Troy Tolentino
★ 5
This was my first ever experience with CrossFit and honestly, it couldn’t have been a better intro. Everything at this gym is just dialed in—super well-organized, form-focused, and run by people who genuinely care about your growth and safety. The community here is also something special—friendly, motivating, and full of good energy. You never feel out of place, no matter your level.
Huge shoutout to the coaches Arianne, Jake, and Erach—absolute legends. Their attention to detail, constant support, and ability to push you in the right ways made every class something I actually looked forward to. They create an environment where you’re challenged, but never overwhelmed, and always encouraged to get better.
If you’ve even thought about trying CrossFit—or just want to be part of something that pushes you, supports you, and leaves you walking out stronger every time—stop scrolling and pull up to this gym. You’ll know exactly why from day one.
Source: Google
Martha Gallego-Ward
★ 5
Eight and a half years ago, I walked into CrossFit Mischief not knowing just how much it would shape me. It’s still the hardest workout program I’ve ever done—but, it’s been the best thing for me. What keeps me coming back isn’t just the challenge, but the incredible community and the coaches who go above and beyond. They offer modifications, push us to grow, and help us to make every workout doable—no matter where we’re starting from.
Source: Google
Deb Bell
★ 5
So glad I found CrossFit Mischief! The instructors are absolutely awesome. It’s such A great encouraging environment.
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S R
★ 5
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bharat beltur
★ 5
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Sudhir Singamsethi
★ 5
It’s only been ~6 months but absolutely love the gym and CrossFit …
Great coaches who are genuine, caring and passionate about following correct technique and making us stronger with each passing day …
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Larry Brown
★ 5
Great place to get back into shape. Friendly environment, it is easier to get motivated when other around you are supportive. That is key to being successful. CFM has this supportive environment.
Source: Google
Bridget C
★ 5
Each class is like a personal training session with the coach. The class size is small allowing the coach to provide personalized feedback. And when it clicks, it’s amazing what you can accomplish.
Source: Google
Jaime Ashton
★ 5
A year ago I joined CF Mischief because I had health issues that left me feeling like I couldn’t get back in shape and I needed a change. I have genetic heart issues that I was worried about working out with but after just 2 months of slowly pushing myself with these workouts, my heart health was so much stronger. Now after a year of being a member I forget there’s even anything wrong with my heart!
I decided this community was it for me after a week of being there, no-one’s judging- everyone is focused on their own goals and helping one another meet theirs; all while the coaches are making sure you’re doing everything correctly.. which I so appreciate. The awesome coaches here always have alternative movements when I need it and I am so so thankful for them being so accommodating and educated. I am just so grateful I found this gym 🥰
Source: Google
Ashley Stack
★ 5
Crossfit Mischief is a great place to workout! I love the people, environment, and community. The facility is clean and well-maintained. With the positive encouragement from others, I have been able to exceed my fitness goals. I highly recommend it to anyone who is looking for a place to enjoy working out!
Source: Google
Gulrukh Raheel
★ 5
I absolutely love this CrossFit gym! From the intense, varied workouts to the supportive community who’s always cheering for me, everything about it is amazing. It’s addictive—I can’t imagine not going now! Each session pushes me to my limits, and the results speak for themselves. The coaches are very meticulous, knowledgeable and encouraging, and I feel stronger and more motivated every day. This gym has truly become a highlight of my daily routine! Thanks to Arianne and all the amazing coaches ♥️
Source: Google
Ck Waters
★ 5
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Kelle Bieschke
★ 5
I’ve been at Mischief for 7 years and would not want to go anywhere else! The 5:30am class works perfectly with my schedule.
The coaches are very helpful taking the workout and fitting it to your ability while still challenging you. They take the time to teach you the correct way to do something before moving on.
Structure is something that is important to me. The structure at Mischief is perfect for what I need.
I like how before every workout there is a mandatory warm up. If I was by myself I would never take the time to warm up!
Every Friday we do a Hero workout. This is special as it gives us a chance to do something someone else may no longer be able to do and we do it for them.
Recently they just opened up a 24 hour access. This is really a great feature. It allows you to come in any time and practice or do a workout. I haven’t used it a lot, but knowing it’s available is a plus.
Most of all there is no judgement from others!! It’s always encouragement. You will find yourself not just joining a gym but a family!
Source: Google
Mari Tsuru
★ 5
I’ve been a member for a little bit over a year and have been see so much progress in my fitness journey, mentally and physically. The Coaches are very knowledgeable and are always willing to help you scale the workouts if need be. The community here is quite special and everyone is very friendly and supportive!
Source: Google
Jake Sonetz20
★ 5
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Jinky Rivera
★ 5
Knowledgeable coaches and great programming.
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Vinay
★ 5
I enjoy working out at CrossFit mischief. The program style keeps me motivated to come most of the week and the coaches give you good tips to make sure to use the right form and technique
Source: Google
Harsha G
★ 5
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Kim Pieczynski
★ 5
I joined CrossFit Mischief in July 2023 as a busy mom of a toddler and a teacher looking for a consistent workout routine, and I couldn’t be happier! The coaches here are phenomenal, expertly differentiating workouts for all fitness levels, from beginners to seasoned athletes. What stood out to me most was how the coaches even coach each other, showing that everyone, no matter their experience, is always working on improving.
My husband and I recently started nutrition coaching with Coach Tobi, and we've each lost 15 pounds. The nutrition program is fantastic, focusing on balancing macros in a way that fits seamlessly into your lifestyle and aligns with your goals.
But the best part of CrossFit Mischief is the members. I love starting my day surrounded by kind, uplifting, and motivating people. I joined for the workouts, but I stay for the community. Highly recommend this gym to anyone looking for a supportive and inspiring fitness environment!
Source: Google
David Fish
★ 5
This gym rocks, and will rock you into the best shape of your life. The owners are awesome and it shows in their business. Run, don’t walk here.
Source: Google
Michael Nutall
★ 5
Arianne has been great since day 1, she was so helpful during the discovery process when I was searching for a new gym. She has gone above and beyond with my onboarding to make sure I get to class and succeed with the programming. Great place all around!
Source: Google
Syed Abidi
★ 5
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Srinivas Rao
★ 5
Great gym and community!
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Mihir Patel
★ 5
I have really been enjoying my time at CrossFitMischief - the coaches are fantastic and the environment has been one that has kept me motivated to come again and again. I was nervous before signing up because I have never done workouts like this in my life, but I am so glad I made the decision to join and I have not looked back once!
Source: Google
Thania Imbordino (T.Imbrdno)
★ 5
Great coaches that guide you every step of the way! Whether you are new, an expert, or the never athletic kind like me, you will feel like you belong here! The community is very supportive and joining a year a half ago was one of the best life changes I ever made.
Source: Google
GURUJU HARSHA - NMOA
★ 5
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binoo verma
★ 5
Love the workout routine and the coaches are so focused to help you learn and grow
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Stephanie Gilbert
★ 5
Super happy with my drop in here. All of the members are exceptionally welcoming. Coach Antonia sets an excellent energy and had very good movement demonstrations. Coach Arianne is so really stepped in to make sure I had an amazing experience also. Class flow from general to specific warm ups to wod is really nicely planned out. Nice, private-ish road for the runs with really well-marked turnaround points. Lots of equipment so you don't have to worry about not being able to get the weight you want even with a big class. The website also makes the drop in registration a breeze.
Source: Google
Cyrus Screwvala
★ 5
Fantastic experience! Everything was perfect, and everyone was kind and welcoming!
Source: Google
Shannon T
★ 5
CrossFit Mischief is the best gym I've attended. All the coaches are helpful and motivating. With the help of owner/coach Arianne I've been able to set and reach goals. The gym is also family friendly - my teen has taken personal training to learn lifting form as well as summertime youth classes. Love the challenging and varied workouts too!
Source: Google
Andrea Torres
★ 5
Crossfit Mischief is amazing. All the coaches are so helpful and welcoming. They always make sure your form is correct and help you reach your fitness goals. Definitely will be recommending Crossfit Mischief to anyone who is ready for a challenge. Thank you for everything!
Source: Google
Danielle Shanine
★ 3
Dropped in. It was okay. For the drop-in fee of $25/person we were a little disappointed because the workout that day was something we could have done at the hotel. No lifting and we really wanted to get our hands on a barbell. :( They are still following COVID protocols pretty strictly so we had to get in and right out quick & during workout stay in our designated space. Everyone seemed friendly and welcoming though. We will probably check out other gyms next time we’re in the area but thankful they had us!
Source: Google
Smitty JayR
★ 3
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Natalie
★ 5
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Dr Q_FunctionalMedicine
★ 5
Classes are very organized and coaches do a great job on skills training and giving movement tips. Arianne does a great job programming workouts. The community is awesome. Very welcoming and encouraging.
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Patricia Carter
★ 5
Very friendly staff and the equipment are in good shape
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Douglas Nygren
★ 5
I love crossfit and I really like the people who attend the classes with me
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Jung Lee
★ 5
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Jung nam Lee
★ 5
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Gorepati S
★ 5
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Compton Paul
★ 5
This gym is really awesome. I started coming here in mid January and have already seen results now just two months later. I usually go to the morning classes where Arianne and Brian are amazing attentive coaches that will push you and ensure that you are doing the movements for the Olympic lifts properly. The only thing that would make this gym better is if they offered a late evening class (like at 9pm) because I am unable to attend any classes when I work a 12 hour shift during the day from 7am-7pm. In sum, this is an awesome place to train whether you're new to Crossfit or a seasoned veteran.
Source: Google
Malgorzata Zagata
★ 5
Crossfit Mischief the best place in the area to get a great workout.Great couches, great atmosphere.
Source: Google
C P
★ 5
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Barbi Mathews
★ 5
Absolutely love the people, community, location, and workouts at CrossFit Mischief! I've been a member for about 9 months now and have never regretted a moment. Plus I have seen great results in how I feel!
Source: Google
Elissa Bright
★ 5
I would highly recommend this gym! The owner and coaches are very attentive and willing to meet you where you are in your health journey. I love the small classes and supportive environment. Communication from the owner and coaches are great and helpful to keep you on track with your goals. Support around nutrition is readily available and the owner and coaches are easy to speak with.
Source: Google
Tina Murphy
★ 5
CrossFit Mischief is great place to workout! Challenging workouts with great coaches, different WOD's every day that are challenging and make you feel and looked great. I've been a member for about 4 months now and Love it. I've met a lot of great people as well. If your looking for a great gym, try CrossFit Mischief!!
Source: Google
Laura Fresh
★ 5
I highly recommend CrossFit Mischief to everyone. Whether you are new to CrossFit or have been doing it for years, the coaches are there to help you get the best workout possible. The coaches and other athletes are very encouraging, welcoming, and motivating. I've been going here for six months now and it has been the best decision I've ever made. This is an amazing community to be a part of.
Source: Google
perry tamkin
★ 5
Great place if you want to feel motivated and see results
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Justen Floss
★ 5
Looking for a combination of fun and fitness?? Well you have found the right spot. From top of the line equipment to great trainers, you will not be disappointed
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Samantha Balint
★ 5
Crossfit Mischief is a great place to work out. With the help of Arianne i have been able to exceed all my fitness goals. Great coaches, well maintained facilities, a fun friendly environment that helps keep you motivated. I would highly recommend this gym to everyone!
Source: Google
Laura Jaramillo
★ 5
This place is clean, organized, great trainers! I love coming here, just started about a month ago and I already feel comfortable in the training and with the activity. I look forward to going to the gym every morning. Great place!! First time crossfitter 😀
Source: Google
Casey Wright
★ 5
I wish I could give CrossFit Mischief more than 5 stars! When looking to join CrossFit, I tried five different boxes. And I can say, without a doubt, that Mischief is unmatched in terms of coaching, community, price, and location.
The biggest draw for me when deciding were the owners and coaches. They're extremely knowledgeable, and it's apparent they truly care about the well-being of their athletes. It's more than a gym to them; it's a family. Whether you're an experienced athlete or looking to get in better shape, I highly recommend you give Mischief a shot!
Source: Google
Sara Ponto
★ 5
The fantastic coaching and fun environment at CrossFit Mischief have kept me motivated and excited to come back everyday! A great fit for newcomers and seasoned CrossFitters alike.
Source: Google
Charles Zadlo
★ 5
I have been doing crossfit for over 4 years now and visited quite a few locations when I travel for work. The owners here have done a great job in a short amount of time getting this location up and running-cool to see it come together for them. Overall a great workout and experience, I would highly recommend Mischief for new as well as seasoned crossfitters. Good class sizes and open AM/PM 6 days a week.
Pros:
Very reasonable prices.
Convenient location for a good part of Naperville and Aurora.
New equipment, floors, and facility.
Source: Google
CrossFit Mischief
★ 5
Our coaches and members will welcome you into the CrossFit Mischief family! Next our knowledgeable coaches will want to learn a little more about your fitness goals, past workout experience and will conduct a fitness assessment to better understand your mobility, flexible and skill set. This will help them determine the necessary modifications you will need to help prevent injury and overdoing it! Remember CrossFit can be for anyone!
You will experience what a typical CrossFit Class is and have the opportunity to ask questions and sign up for our Foundations Course! Let us help you achieve your fitness goals!
Source: Google