CrossFit Kryptonite Reviews

Alexander Potter 2025.11.28

     

Great gym for a drop-in, got quick responses from the coaches about scheduling, Coach Marianne was great at walking through the movements and coming up with modifications as needed. Everyone in the class was very welcoming and helpful. Workout was a medley of Hero workouts - left me completely gassed. Would definitely recommend!

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Reply from CrossFit Kryptonite 2025.11.29

HI ALEX, IT WAS WONDERFUL HAVING YOU. PLEASE FEEL FREE TO DROP IN AGAIN WHEN YOU'RE IN THE AREA.

Phyllis Jonaitis 2025.11.23

     

I'm a senior woman who recently joined CrossFit Kryptonite , and I've been so impressed with both the coaching and the welcoming atmosphere. Mariana the owner and coach is patient, attentive and truly focused on proper technique. She has created a strong sense of community and I always feel supported and included. I highly recommend this gym to anyone looking to be in better shape, stronger, and that offers a warm, positive environment.

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Reply from CrossFit Kryptonite 2025.11.25

Thank you for this wonderful review! We’re truly grateful to have you as part of our gym family. Your consistency, and willingness to learn make coaching you a pleasure.

Liz Felix 2025.11.19

     

The coaches actually pay attention — correcting form, pushing you safely, and helping you hit levels you didn’t even know you had. The people are what make it special. The community is supportive, positive, and welcoming. Someone is always cheering you on, even if they just met you that day. You feel like you’re part of a team, not just a gym membership. Clean space, great equipment, amazing atmosphere, and real results.

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Reply from CrossFit Kryptonite 2025.11.20

Hi Liz,
Thanks so much. It is like a big family, and glad you're part of it. Keep up the great work.

Nancy Nielsen 2025.11.14

     

CrossFit Kryptonite has quickly become one of my favorite places to be. From the moment I walked in, the atmosphere was warm, welcoming, and full of positive energy. The people here are incredibly kind, supportive, and genuinely excited to see you succeed. I want to give a special shout out to Mariana who has made my experience exceptional. She has a true gift for coaching. Her ability to break down movements, offer helpful techniques, and guide you on how to improve your form is outstanding. I love how she pays attention to the small details that make a big difference in the workout. Her encouragement keeps me motivated and her expertise helps me push myself in the right way. I truly enjoy coming to CrossFit Kryptonite and I am grateful for such a great community and an incredible coach. If you want a place where you feel welcomed, challenged, and supported this is it.

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Reply from CrossFit Kryptonite 2025.11.14

Hi Nancy! Thank you so much for your kind words. I’m so glad you feel welcomed here at our gym—it’s truly a pleasure coaching you. Your willingness to learn and improve makes it easy. We’re sad you’re only here for the month, but grateful we got to have you with us!

Brianna Holliman 2025.11.11

     

If you’re looking for a place that feels like home, keeps you accountable, and helps you get stronger every day, this is it! 💪

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Reply from CrossFit Kryptonite 2025.11.12

Thanks so much Brianna. Glad you feel like home here.

Melissa Novotny 2025.10.24

     

I am a fairly new member of Crossfit Kryptonite but have been doing crossfit for about 14 years. I tried this gym because it’s close to home and when I went to check it out I loved the energy, I couldn’t wait to come back and try a class. The programming is great, the gym is very clean but most importantly, the coaches and members are so welcoming and friendly. The coaches know their stuff and are hands on and encouraging. I have mostly been to the morning classes with Mariana who is also the owner, and she is the best! I am a new mom and after almost a year long hiatus from fitness, I’m excited to get strong again for my daughter and I’m happy I get to do that here. I’m so glad I found this gym, the classes are fun, the work outs are great and the vibe is awesome!

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Reply from CrossFit Kryptonite 2025.10.24

Thank you so much for sharing this amazing feedback! We’re thrilled you found your way to ou gym and that you’re loving the energy, coaching, and community. It’s inspiring to see you back in action and setting such a strong example for your daughter! We’re so glad to have you as part of the CrossFit Kryptonite family — can’t wait to see you continue to crush your goals.

Mike Russo 2025.10.13

     

If you’re considering CrossFit this is the one. From minute one I was made to feel right at home by both coaches and members. The workouts are challenging but can be scaled to suit your fitness level and goals, so don’t be intimidated. Both coaches and athletes are very encouraging be it before after or during the workout. Mariana is excellent and it shows that she wants to see you succeed. I’d recommend this gym to anyone who wants to take their fitness to the next level beginner and experienced gym goers alike.

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Reply from CrossFit Kryptonite 2025.10.14

Hi Mike, thank you so much for the amazing feedback! We’re so glad you're back and felt welcomed from day one — that’s the environment we try to create at Kryptonite. Our goal is to make sure everyone, feels supported, challenged, and encouraged to reach their goals. Keep showing up and crushing it! 💪

Travis Kaiser 2025.09.25

     

What a great gym! Mariana put me on track for my weight loss and fitness journey. The workouts are hard but completely doable. The atmosphere is extremely welcoming. Definitely recommend coming down for a class. So happy I’m back with the CrossFit family

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Reply from CrossFit Kryptonite 2025.09.25

Thank you Travis, so glad to have you back. Your hard work is paying off, I can definitely already see the change.

Christina I 2025.09.06

     

My son recently started at Kryptonite CrossFit and it has been such a positive experience. The coach is motivating, knowledgeable, and supportive, and the atmosphere is welcoming and encouraging. It’s amazing to see him building strength, confidence, and discipline — and actually looking forward to his workouts! We’re so happy to have found this community and highly recommend it.

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Reply from CrossFit Kryptonite 2025.09.08

Hi Christina. Thanks so much for taking the time to write this. Glad Chris feels welcomed in the Teen Fitness Club. He works hard and always puts in his best effort. It's great to see his progression.

Emily Anderson 2025.07.31

     

Dropped a couple of times in while visiting over the summer - loved the vibe, coaches and members were all super friendly!

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Reply from CrossFit Kryptonite 2025.08.04

Hi Emily, it was great to meet you. Glad you enjoyed the classes.

Susanne Katchko 2025.07.25

     

This is such a supportive place to train! Both the owner, Mariana, and the other pros who train and teach here are as well-informed and encouraging as could be!! I am officially a senior citizen (though I haven’t yet received that memo😄) with weak upper body strength, and each teacher finds the perfect balance between scaling my work-outs to my current abilities and raising the bar just enough to move me forward. As if the teachers weren’t enough of an asset, owner Mariana has established a spirit of mutual appreciation and encouragement - every “Good job!” to each other is a win for all!

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Reply from CrossFit Kryptonite 2025.07.27

Thanks Susanne. So happy you enjoy coming. It’s wonderful to see how much stronger you’ve become. Can’t wait to see what the next six months brings.

Megan Skelly 2025.07.08

     

Always a great experience at CrossFit Kryptonite. I’ve been dropping in here for 5 years every summer when I’m in town visiting family. The owner / coach Mariana remembers me every time and always makes me feel welcome! Great programming, welcoming members, and everything you need in a CrossFit gym. I’ll keep coming back every year, and I encourage others to check it out too!

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Reply from CrossFit Kryptonite 2025.07.08

Thanks so much Megan. Love having your energy when you drop in. Hopefully we will see you for many years!

Kait Taylor 2025.07.08

     

My wife and I drop into CrossFit Kryptonite every year while in town visiting family. Coach Mariana and the gym community has always been so welcoming over the years. We couldn’t imagine dropping into any other gym in the Westhampton area!

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Reply from CrossFit Kryptonite 2025.07.08

Thanks Kait, glad we're your go to gym. It's always wonderful seeing you guys every summer crushing the workout!

Nina Smith 2025.06.23

     

I joined Kryptonite CrossFit in the beginning of May. My main goal was to incorporate more strength training into my exercise routine to slow down the process of osteoporosis and simply to become stronger. Marianna was, and continues to be knowledgeable and helpful. Although I was nervous about not knowing the exercises, specifically the barbell work, everyone from instructors to members are helpful and encouraging. I’m already noticing improvement in my strength and endurance as well as my confidence level. It is definitely worth the time and effort.

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Reply from CrossFit Kryptonite 2025.06.23

Thank you Nina. Muscle is so important as we get older. So glad you're already seeing gains. Keep up the great work!

James Kennedy 2025.06.20

     

Fantastic CrossFit gym!! The facility is super clean, coaches are extremely friendly and very accommodating for athletes of all levels! Highly recommend this gym to anyone who is trying to take their health and fitness to the next level!!

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Reply from CrossFit Kryptonite 2025.06.20

Thank you Jimmy. It's always a pleasure having you drop in when you are in NY.

Brittany Delgado 2025.06.17

     

Mariana is one of the best trainers along with other trainers i’ve been going there since I was a teenager, no matter how long i haven’t been there. I’ll always go back. They are encouraging supportive, and the People who you work out with they are so helpful and positive the one gym you would go to and don’t feel intimidated. It’s a great atmosphere for anyone to join no matter how out of shape you are you’ll never feel alone or out of place! Everyone is like family <3

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Reply from CrossFit Kryptonite 2025.06.17

Thank you Brittany. From badass Golden Glove champion to mom, it's been wonderful watching you grow up.

Douglas Martucci 2025.05.18

     

One of the best experiences of my life. From the great coaching to the friendly members, Kryptonite has been my gym home for the last 10 years. I have never been in better shape or interacted with kinder nicer members. If you’re looking for a great place with great people to train with this is your spot

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Reply from CrossFit Kryptonite 2025.05.18

Awww, thanks Doug. We've been great friends for 10 years. You've brought lots of fun to the 7am.

Michael L 2025.05.17

     

This place is awesome. I am new to it but love it already. If you have been thinking about trying Crossfit but haven't yet, try this place. You will love it too.

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Reply from CrossFit Kryptonite 2025.05.17

Hi Mike, Thanks so much and welcome to our gym family. Glad you decided to give us a try.

Tess Orih 2025.05.08

     

I use to go to planet fitness and couldn’t get into a workout routine that worked for me. I wanted something more intense and an expert trainer like (Mariana) and her team who could help me with my fitness goals. This place is just that. The atmosphere is outstanding, it feels right at home. Everyone is so compassionate and makes you feel like family. NO JUDGEMENT AT ALL. I would recommend this place to anyone! Linda M.

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Reply from CrossFit Kryptonite 2025.05.08

Hi Linda, so glad you joined us a few months ago. You bring such enthusiasm, positivity and energy to the 5 am. Welcome to the krypto family.

Megan Cozell 2025.05.01

     

I have been coming to this gym for many years. I have done the regular classes and now I do the Boot Camp classes. It’s an awesome class so very comfortable with a great instructor and gym partners. I highly recommend it also very flexible and tailored to your needs.

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Reply from CrossFit Kryptonite 2025.05.01

Hi Megan, So glad you enjoy the Boot Camp classes. It's a great way to get a quick workout in, especially for busy moms. :)