• * Under 18 must be accompanied by parent or legal guardian. First-time visitors and local residents only. Terms and conditions may vary and certain restrictions apply. No cash value; value may vary by market. Cannot be combined with any other offers or discounts. Valid at participating locations only. Each franchise location is independently owned and operated.
  • * Under 18 must be accompanied by parent or legal guardian.


4411 Mercury St #105A
San Diego, California 92111


  • I'm also a runner and I cant burn nearly as many calories from 30 minutes of running, compared to 30 minutes at 9 round. Its been a bonus doing both though, as it helps me cross train for my upcoming half marathon. I love how friendly and positive the trainers are.
    - Apr 8, 2019 by Erica Silvas
  • I finally found something that works for me. I’ve lost over 60 pounds because of 9round and look forward to going and getting my workout in everyday
    - Apr 6, 2019 by David Brito
  • Love the energy and the 'push hard-finish strong' mindset. I've never left a workout session disappointed or not physically challenged. Its a good time every-time. Oh yea...the staff members are what brings everything together. Friendly, caring and likely to make you do some extra burpees!!! Love those guys.
    - Mar 18, 2019 by D.W.
  • Hard workout in a in a short amount of time. Perfect for busy working professionals!
    - Feb 13, 2019 by Jerid Hinze
  • The trainers are THE BEST! Also a fun workout and no class times make it perfect. I was out with bronchitis for over a month and missed going!
    - Feb 6, 2019 by Malissa Winicki
  • I love how closely the trainers work with you. They make the workout so much fun!
    - Jan 14, 2019 by J.S.
  • 30 min workout...who doesn't have 30 min in their day to do this? The workout is always different and the trainers make it a pleasure to workout. Love this place.
    - Jan 13, 2019 by C.P.
  • The amazing trainers and positive energy when I work out. Also no class times make it so easy to fit into my schedule
    - Jan 6, 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!!!!
    - Jan 5, 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!
    - Dec 7, 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.
    - Dec 5, 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.
    - Dec 5, 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!
    - Oct 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!
    - Aug 30, 2018 by Garrett Grijalva
  • I’ve loved this place since the day i first tried out. The staff there is so personable and they make feel comfortable and confident. It’s someone different each work out and it always a good time. I’ve been there for about 3 months and I’m already seeing a difference!
    - Apr 3, 2018 by Brittany Hallett

About the team

  • 9Round trainer
    Brandon "The Bulldog" 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 and 9Round is the perfect fit for my busy lifestyle! Here in Kearny Mesa, Missy and I only hire members for trainer positions. We have found this gives our members the best experience - bar none! The energy at the gym is amazing! We are so happy to have found such a great group of trainers that help keep you sweating and smiling! If you haven't tried us out, your first class is free so what are you waiting for! Brandon Danieli
  • 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
    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
    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
    Brandon "Jon Snow" Smithson
    I had recently finished my undergrad and had fallen off several workout routines when I found 9Round Kearny Mesa. I found it hard to stay motivated and consistent at typical gyms, but my friend recommended 9Round and it is the most engaging and time-efficient workout I've ever come across. As a previous runner, I was happy to find a workout that incorporated cardio with weights and has done wonders for my mental health. I've been working out since Feb '18 and training since Sept '18 here with these amazing trainers who feel like a family to me. Come in for your first free workout! Summer is coming.
  • 9Round trainer
    Lauren "The Lunatic" Witeck
    I am a proud Navy spouse and momma of an extremely energetic 9-year-old and now as of Dec 2018 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
    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
    Lauren "Lights Out" Jones
    Lights Out has a profile coming soon!
  • 9Round trainer
    Katelyn "Bada$$" Badarak
    Bada$$' profile is coming soon!
  • 9Round trainer
    Roni "Rowdy" Rindge-Silvas
    After leaving the military in 2018, I was looking to find something fun, challenging, and the community to push me. A coworker recommended 9Round Kearny Mesa and I couldn't get away ever since! 9Round not only gives you a killer workout every time, but builds a gym community like no other. Now that I have a desk job, I greatly appreciate coming in whenever I can. I promise to always push you to your limit and put a smile on your face no matter how your day is going!
  • 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!
  • 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!

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