★ 3

Very much enjoyed the class, however, be careful to purchase any packages as expiration dates were apparently in fine print and not clearly disclosed and even if you have 8 lessons left out of ten they are wasted and non transferable.

Source: Google

★ 5

Katie is the Best: motivating, knowledgeable, fun! As a fitness professional myself, I have high standards. She exceeded all…uses a mic for every class, changes up sequences and equipment, observes and corrects students, does not workout with the class!!! Thanks for all.

Source: Google

★ 5

When seeking a trainer for my son, it was important to find someone not only with knowledge but with patience and compassion. We have been lucky to find it all with Katie! As a young man with extra needs, Katie provides both a safe space and an encouraging and motivating environment. We have seen a difference in our son's physical strength and his confidence in challenging himself. Awesome!

Source: Google

★ 5

I love that everything from the organization of the gym class is put together to the availability of the morning classes. Such a pleasure to be around good vibes!

Source: Google

★ 5

Amazing workouts that are not too technical in a friendly, open, supportive and welcoming environment. The classes are great bc I can just drop in, get an intense workout, and be sore the next 2 days which always feels good. Wish I knew of this place sooner! .

Source: Google

★ 5

Source: Google

★ 5

Always challenging and never the same class! Katie is very encouraging and knowledgeable. So happy I joined UG!

Source: Google

★ 5

Source: Google

★ 5

Katie is a great teacher. Class is fun and just challenging enough —I leave feeling that I had a good workout

Source: Google

★ 5

Guaranteed great workout every. single. time. First thing I do after booking a trip to the North Fork is get on UG's schedule of classes. Workouts are fun, challenging, and never boring. You won't do the same workout twice, and the community of regular UG'ers is super welcoming and motivating. This place is a true NoFo gem.

Source: Google

★ 5

The best workout around!!!

Source: Google

★ 5

The classes at Underground Training have been nothing but informative, fun and productive. Each instructor brings their own knowledge, personality and skills to the class. Underground Training is a great gym to learn, grow and become stronger.

Source: Google

★ 5

Katie is a motivational and kind instructor. Our workouts are varied and lively. Highly recommend for all levels.

Source: Google

★ 5

Source: Google

★ 5

I recently discovered Underground Training and absolutely love it! Katie is a total rockstar! She isn’t pushy, plays great music and motivates you to try your best. The crowd there is super supportive too!

Source: Google

★ 5

Katie's classes are the best! She's always coming up with new stuff to keep it fresh and challenging, along with a great playlist every time). Every time I leave, I'm glad I made the effort to show up. Highly recommend these classes for anyone looking for great workouts!!

Source: Google

★ 5

UG and Katie quite literally get me through the week. She holds you accountable, gives you a tough but doable and creative workout every time. Katie is fun, funny, kind, encouraging and easy going without going easy. I’ve had trouble sticking to a workout schedule until I found this gym 3 years ago, and now I never want to miss a class. Book before your favorite class fills up!

Source: Google

★ 5

Katie is the absolute best and I’m so happy that I found UG. Training with her has become a must in my morning routine and from the start she has made me feel so comfortable and welcomed. She listens to my personal needs and makes custom workouts to fulfill my goals according to what works best for me. I can’t say enough good things! She’s just the best!

Source: Google

★ 5

Source: Google

★ 5

A different workout everyday. Always challenging efficient, and fun!

Source: Google

★ 5

Source: Google

★ 5

Katie is an incredible trainer! We booked an off-site class with her during a bachelorette weekend in Greenport - the class was challenging (yet still modifiable), and Katie put together an amazing and motivating playlist. Highly recommend her and Underground Training!!!

Source: Google

★ 5

Katie was beyond amazing! I scheduled a private class for my best friends bachelorette party and we had so much fun! Five of the girls attending were pregnant and Katie was able to modify the TRX workout to work for all of us! We had the best time and I will definitely be taking more of her classes in the future.

Source: Google

★ 5

I am in love with underground training! Katie knows what she is doing and she is incredibly kind. The studio is beyond beautiful, extremely clean and huge! With three floors of perfection. I felt so great after my first private training session with Katie and I’m excited to continue working with her! I would HIGHLY recommend working with Katie and all the classes that underground training has to offer.

Source: Google

★ 5

Great classes, clean and beautiful facility, knowledgeable instructors, reasonable pricing! Highly recommended all around!

Source: Google

★ 5

Source: Google

★ 5

Underground fitness helped kickstart my summer workout routine. Katie does a fantastic motivator and instructor - she takes the time to explain each part of the work out and more importantly - how it should feel as you are going through the motions. The short 30 to 45 minutes classes make it easy to schedule into your day but really pack a punch in terms of a workout. Her classes are perfect for all levels- don’t feel intimated by signing up for that very first class- you will be hooked!

Source: Google

★ 5

Source: Google

★ 5

Katie is the perfect combination of pushing you harder than you thought you could go, with encouragement every step of the way. She’s amazing.

Source: Google

★ 5

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★ 5

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★ 5

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★ 5

Source: Google

★ 5

Fabulous workout in a boutique yet friendly atmosphere! Katie is great.

Source: Google

★ 5

Source: Google

★ 5

Great class offerings. Katie is a knowledgeable and challenging fitness professional!

Source: Google

★ 5

Source: Google

★ 5

Amazing class and facility. Katie does an incredible job keeping you motivated and pushing you gently beyond your comfort zone for maximum results.

Source: Google

★ 5

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★ 5

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★ 5

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★ 5

Love Katie’s classes!

Source: Google

★ 5

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★ 5

Source: Google

★ 5

Love training with Katie! I feel stronger, stand taller and have fun, too!

Source: Google

★ 5

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★ 5

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★ 5

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★ 5

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★ 5

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★ 5

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★ 5

Source: Google

★ 5

Amazingly efficient workouts with such a skilled trainer! Love this place...

Source: Google