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  • *Under 18 must be accompanied by parent or legal guardian.

  • *Under 18 must be accompanied by parent or legal guardian.


4411 Mercury St #105A
San Diego, California 92111


  • The amazing trainers and positive energy when I work out. Also no class times make it so easy to fit into my schedule
    - January 06, 2019 by Suzanna Mcmahan
  • The trainers and the atmosphere, they motivate you and push you to your absolute limits!!!! Literally the best 30 Minute calorie burning workout on the planet!!!!
    - January 05, 2019 by Nikki Ferrante
  • They ALL are amazing. I have visited other locations, and they don't meet half the energy they provide. They know me by name and know how to push me to be better. I am a lifer!
    - December 07, 2018 by Amanda Brown
  • The trainers at the Mercury location are amazing. They push, they encourage, they are mindful of my back injury. They teach. They explain. They rock.
    - December 05, 2018 by Dawn Huckabone
  • A great workout in a short period of time, it varies each workout so you don't get bored, and the trainers are helpful and provide modifications if you need them so you get the best workout for you.
    - December 05, 2018 by Linda Manza
  • The atmosphere when I walk in everyone is so nice, 30 mins is the best because I work out on a timed lunch! Great equipment ! Something new everyday!
    - October 12, 2018 by Tiera Simpson
  • The all-around energy you get from this workout. From the trainers to the workouts each round to the amount of pad drills, 9Round is an incredible workout. Not to mention the high standard set at 9Round Kearny Mesa, it’s unparalled by any other 9Round gym I’ve experienced. Hands down, greatest workout experience and gym I’ve been lucky to be a member of. Anyone who hasn’t given this place a try is missing out big time!
    - August 30, 2018 by Garrett Grijalva
  • What I like the best about the 9Round experience are the coaches. They always have a motivating demeanor and are encouraging and helpful on completing the workout.
    - July 25, 2018 by C.M.
  • I love that you can choose when to come in for a workout. I love that all you need is 30 minutes for an efficent ,intense and high quality workout that changes every day so there is no way your body will platue. The staff are really nice and excellent with their one on one training. This is a place where I look forward to working out , which is pretty amazing.
    - July 14, 2018 by Arricka Likavec
  • I love the people. The trainers are fantastic. The workout is great, and is fun so I enjoy going back. I love going to 9Round and I miss it when I’m away.
    - July 14, 2018 by Kaia Blackman
  • It’s a great workout and the energy from the employees is fantastic.
    - July 09, 2018 by Deirdre Fabian
  • I absolutely the atmosphere and the coaches! Every time I walk through the door I am greeted with a smile! I look forward to my workout at 9round, it has become part of my daily routine! It’s fun and an amazing workout that will leave you sweating but wanting more!
    - July 06, 2018 by Ashley Kouma
  • 9Round Kearny Mesa has literally changed my life! The trainers are interactive, supportive and knowledgeable. No better workout around and it’s a quick 30 minutes of pure intense sweat!!!
    - July 04, 2018 by Nikki Ferrante
  • I love how the trainers follow you through the work outs. It’s motovating and ensures efficiency. I love the intense quick workout and that it changes daily. I’m challenged but never feel overwhelmed.
    - June 13, 2018 by Summer Young
  • The trainer know my name every time I come in. They are motivating and know how to push me so I don't get complacent.
    - June 05, 2018 by A.B.
  • It's a challenging workout that is fast, fun and keeps you guessing. The staff and members are welcoming and make you feel comfortable no matter your fitness level. Each trainer is unique and has their own spin on how to kick your butt! And I appreciate them all!
    - May 09, 2018 by Elizabeth Reynolds
  • Drop in (no class times) Challenging - seeing results quickly Core strength- never felt stronger in my life! Trainers - appreciate one on one focus and help. And they are so fun and remember everyone. Pulse points - make me push myself. I know I would slack off without this system.
    - April 09, 2018 by Robyn Kelly
  • I love that I am greeted every time I walk in! The trainers are wonderful, I absolutely love 9Round and look forward to going every day!
    - April 05, 2018 by Ashley Kouma
  • It’s the only workout that has really worked for me achieving my weight loss goals. I’m in the best shape I have been in since high school and I feel great.
    - April 04, 2018 by David Brito
  • The trainers are not only knowledgeable, but friendly, encouraging and so much fun! I always feel welcome and comfortable, even on my less energetic days. It’s more than a workout, its a fun way to get healthy and feel like you’re apart of a family.
    - April 03, 2018 by Nicole Moon
  • Life changing! The energy of the trainers the moral of the customers it’s a place where you can feel comfortable and get the best workout possible in a quick 30 minutes!!! Brandon and his staff are incredible and motivating and keep you on your toes!!!! I look forward to going each and every single day!!!
    - April 03, 2018 by Nikki Ferrante

About the team

  • 9Round trainer
    Brandon "The Bossman" Danieli
    I was a 9Round member and decided I couldn't get enough of this workout, so my wife Missy and I decided to open our own gym! I have always loved fitness. I played a year of college football and had always lifted weights until I found 9Round. The resistance from hitting the bags combined with the cardio and the convenience of the 30 minute workout has been a life changer! I'm getting better results compared to my prior workout routine and it only takes 30 minutes. At our gym, Missy and I only hire members for trainer positions. We have found this gives our members the best experience. We are so happy to have found such a great group of trainers that help keep you sweating and smiling! Brandon
  • 9Round trainer
    Jason "The Judge" Witeck
    I am a Nuclear Engineer in the US Navy and have been enlisted since August 2002. I have traveled the world and continue to do so today. I joined 9round because I could never seem to add cardio to my normal workout routine. I decided to walk into this kickboxing gym and talk to Brandon, and was intrigued as soon as I walked in. I have been a member since Aug 2016 and have seen big improvements in both technique and form. The workouts are fun, convenient, and always different. As soon as I completed my first workout, I knew that this would be something that I would love to teach as well. In October 2017 I completed 9Round's Master Trainer Bootcamp!
  • 9Round trainer
    Lauren "The Lunatic" Witeck
    I am a proud Navy spouse and momma of an extremely energetic 8-year-old and now as of Dec 2019 a newborn! After moving from Washington to New York to Japan to California, I have finally gotten myself back in college. I’m getting my degree in the Health Information Technology program, and can’t wait to finish and get started the medical field. With the busy, dynamic life we lead, I was very excited to discover a workout that fit into my schedule! Only 30 minutes, at any time of the day? Can’t beat that! After months of being a member and getting to know the fantastic team that works here at 9Round, I was ready to jump in and give other members a great workout! I’m excited me meet all of you and get you sweating!
  • 9Round trainer
    Laura "The Crusher" Crisp
    I joined 9Round Kearny Mesa after coming home from a deployment to Afghanistan as a Navy Nurse. I needed a challenging workout that incorporates strength and cardio, is flexible with my nursing schedule, and engaging enough to keep me motivated and consistently working out. My roommate suggested we try 9Round, and I’ve been hooked ever since! I’ve never sweat so much after a 30-minute workout in my life. I love having the opportunity to work out with other people and a trainer, but no class times! I became a trainer when I transitioned into the Navy Reserves in June. I’m excited to give you a killer work out and to show you why 9Round Kearny Mesa is the best gym in San Diego!
  • 9Round trainer
    Fred "The Butcher" Berona
    I'm a fan of lots of types of exercises, but 9Round stands out from them all! Not only is it efficient, highly active and different everyday, but it will be as challenging as you make it. I'm a graphic designer by trade, so after hours I'm sitting at a computer. All of the punching and kicking in this workout is some extremely fun stress relief! Come on in and workout with me!
  • 9Round trainer
    Ryann "Killer" Kinnersley
    I joined 9Round because I was looking to start adding more challenging workouts into my routine. With a busy schedule, I love the fact there is absolutely no class time, I come in when I am ready, and have a trainer with me. After 2 kids I am in the best shape of life! It gives me such gratification to be apart of the 9Round family. I love challenging our members, encouraging them, and working with every single person that walks through the door.
  • 9Round trainer
    Melissa "Mhaleesi" Rios
    As a video game nerd, I was looking for something challenging and fun to get me off the couch to be more active, and that's when I found 9Round Kearny Mesa! What I love most about 9Round is that the exercises change every day, you get one-on-one pad work time with Trainers, and it's a full body workout! In March of 2018 Brandon and Missy gave me an opportunity to be a Trainer with the 9Round Kearny Mesa Family and I haven't looked back since! Outside of 9Round, I love doing yoga, going hiking and even taking a dance class from time to time. Come on in, punch it out, and let me show you why I love 9Round so much. You'll fall in love with it too!
  • 9Round trainer
    Jenni "J Wow" Marchisotto
    I first joined 9Round as a fun and convenient full-body workout. After playing competitive water polo for almost a decade I had trouble finding a workout that kept my interest. 9Round did the trick! The 9Round Kearny Mesa community is incredibly supportive and engaging. I am always happy to get to the gym. The workouts are tough but fun, and I always leave the gym tired (in a good way!). After being a member for over a year, I am excited to work as a trainer. I understand the workout experience from both sides and love to think of new and creative ways to work up a sweat! Give it a try and join the 9Round community!
  • 9Round trainer
    Missy "The Machine" Danieli
    I love to workout, am passionate about fitness, and nutrition. I tried multiple workouts and find it hard to stay interested, that is until I discovered 9Round! The workouts change daily, keeping me engaged and I have full access to personalized nutrition. Not to mention there are NO CLASS TIMES which fits perfectly into my crazy schedule! Can it get any better? I can't wait to share this passion with you!

Local News and Events

  • blog
    26 Dec 2018 | by San Diego, CA - Kearny Mesa
    Attention, San Diego! Why wait until 2019 to hit your fitness goals?  Get started now to save $180 on registration and lock...
    Read more
  • blog
    30 Nov 2018 | by Brandon Danieli
    We have challenged our friends at 9Round Carlsbad to a PULSE Point competition for the month of December! The gym with t...
    Read more
  • blog
    08 Oct 2018 | by San Diego, CA - Kearny Mesa
    The member with most check-ins for the month of October receives one month of free membership! The tie-breaker goes to member...
    Read more