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The Best Personal Training in Corte Madera

Strength and Longevity In Corte Madera

Welcome To TJ's Gym

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ARE YOU READY FOR:

Finally putting
YOU first?

Invest in the one thing that drives everything else: your health. Step into a space designed for busy professionals to refocus, recharge, and perform at their best with every session.

Train with
STRUCTURE & ACCOUNTABILITY?

Partner with an expert coach who builds a plan around your unique goals and ensures you stay on track. No more guessing, just clear direction, real progress, and consistent results.

Strength that
lasts a lifetime?

Go beyond short-term fitness and train for longevity. With 35 years of proven experience, we help you move better, feel stronger, and stay at your peak today and for decades to come.

Then We Are Ready...

To Guide You On Your Journey!

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Small Group
Training

Personal
TRAINING

Work one-on-one or in small groups with a professional coach who designs a plan tailored specifically to you. Get the structure, accountability, and expert guidance you need to reach your next level.

Custom
Programming

Access individualized workout plans designed around your schedule, goals, and abilities, whether you train here or on your own. Each program adapts as you progress to ensure consistent results.

Teens
PROGRAM

Build strength, speed, and athletic confidence in a supportive environment for young athletes. Coaching focuses on proper movement, conditioning, and injury prevention to enhance sports performance.

Legends
60+

Reclaim the way your body used to move with strength, stability, and vitality training designed for longevity. Every session helps you build confidence, resilience, and lasting independence.

Group
Classes

Train in a fun, instructor-led environment built around functional fitness that challenges your body and sharpens your mind. Every class blends energy, community, and purpose to help you move and feel your best.

WHAT PEOPLE ARE SAYING

REAL MEMBER REVIEWS

Todd Nief
Todd Nief
★★★★★
TJ's Gym has been open for decades and sets the standard for fitness in Marin. This is a great, well-run gym with owners and coaches who care a lot. If you're looking for group classes or personal training focused on functional fitness, look no further.
Cameron Walsmith
Cameron Walsmith
★★★★★
TJ’s Gym is the BEST gym in Corte Madera, hands down. This place will motivate you to be a better person and hit your goals inside and outside the gym. The coaching is supportive and comprehensive, personal training is thorough, and this is the best place to work out, anywhere. It’s an incredible community and coming to the gym will change your life. The best gym out there.
Abby Pledger
Abby Pledger
★★★★★
Before starting I was always a bit intimidated by TJs and if it was the right fit for me. I joined a small group with a trainer and it is the best decision I made. This gym is awesome for getting stronger, building confidence, and finding community. Such a welcoming group of people. You will get your technique right and avoid injury. Highly recommend. Try it.
Steve crane
Steve crane
★★★★★
Great coaches and members!

The Best gym near me in Corte Madera !

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Are You Ready To Level Up?

Getting Started Is Easy!

STEP 1

SCHEDULE YOUR
FIRST VISIT

Talk with a TJ about your goals and meet our trainers, tour the gym, and learn more about our programs.

STEP 2

START
YOUR TRAINING

We will start you strong by taking you through the fundamentals of training and sound habits, putting you on the road to success!

STEP 3

HAVE FUN REACHING
NEW LEVELS

Book classes easily on our app, improve your fitness, and enjoy the workouts with awesome people and reach your goals in no time!

this is your call to action...

start Your Journey today!

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Got Questions? We've Got Answers Right Here!

Super simple! Just click get started anywhere here on the page to book your free intro session where you’ll tour the gym & meet our coaches.

We will chat about your current situation, your desired situation to see if we can help and if we are good fit for each other. Sign up today!

When you start at TJ’s Gym, your fitness level will improve quickly, usually in the first 30 days.

The key to see results is consistency and commitment over time so that’s why we recommend 3 classes per week as a start. Sign up today!

Yes! We provide guidance on eating right or sleeping well which can help maximize energy levels – getting YOU maximum results from your efforts. Sign up today!

Nope! Most of our members start just like you. We assess each new members fitness level.

Then our workouts are “universally scaled”, with a different version of each days workout designed for every level. As you level up you can take on more challenging variants of the workout if you desire. Sign up today!

We are locally owned and purpose built to make an impact on the health and happiness in Corte Madera and the surrounding area.

You’re not just a number here, everyone knows your name. We’re a community of like-minded people that wants you to show up and supports each other on this journey to live better lives – with no judgement or criticism along the way. Sign up today!

If you’re a beginner and just starting out then 2-4 times per week will be enough to see results and allow you to adjust.

You’ll be sore some days, so allow yourself recovery days between training sessions at first – over the course of the following months work up towards 5 days per week if you want to maximize! Sign up today!

We offer an exciting, challenging and varied programming which will keep it fun! The workouts are published in advance.

Some days are more strength focused where we will focus on our lifts. Movements like barbell squats, kettlebell swings and occasionally some olympics lifts will be included.

Other days, we may focus more on cardio & conditioning with rowers and bikes. Some days are focused on body weight movements like pushups, sit-ups, and pull-ups. Some days are a mix of everything. Sign up today!

Each class is 60 minutes and led by qualified coaches. We always start together with a warm-up designed to activate the muscles being used in the workout.

The coach will brief the group on the workout, the movements, and the proper form. During the workout, the coach will be guiding and providing instruction.

At the end of class, we will cool down together to accelerate recovery and reduce potential injury. Sign up today!

GET STARTED

GETTING STARTED IS EASY!

Simply fill out the form below and then schedule Your FREE intro session on the next page.

Shortly after we will be in touch with you to confirm your intro session. We are excited to meet you!

(give our form below a second to load, we love you for it!)

Pedro “Hawk” Morales

COACH

Hawk grew on the Mendocino Coast and moved to Marin County in 2023. He has always had a passion for individual and team sports having grown up competing in wrestling throughout Middle School and High High School and Competitive Cheerleading in High School where he was a 4 time National Qualifier through USA Cheer and was a UCA All Star his senior year, having helped coach his squad to a fifth consecutive USA Nationals the year after graduating.

He has always relied on fitness as a standard in his life, but after years of events and hospitality work in wine and fine dining, decided to transition into the fitness world as a career in 2023. He became certified as a personal trainer through the National Association of Sports Medicine and is currently working on continuing his education in Nutrition and Corrective Exercise. He has been a part of TJ’s Gym since 2024 where he has continued to refine his technical lifts and has had experience in coaching teen clients, personal training clients, and large group format classes. He also specializes in HIIT and has a passion for body recomposition, functional bodybuilding, and mobility training.

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Zulma Terrones

COACH

Zulma is a strength and wellness coach with over a decade of experience at the intersection of physical and mental health. Her coaching is rooted in evidence-based movement, resilience-building, and mindful strength—helping people build not just stronger bodies, but stronger relationships with themselves.

After years working internationally as a mental health crisis clinician, Zulma turned to strength training as an empowering embodiment practice and stress management technique. She helps clients understand that strength and mobility are powerful tools for transformation and longevity, cultivating consistency, patience, and self-trust that extend far beyond the gym.

A former rower and dragon boat athlete, Zulma brings a diverse movement background, with experience in yoga, running, cycling, TRX, and reformer Pilates. In her sessions, she prioritizes functional strength, fluid mobility, and long-term growth, creating a supportive environment where people lift safely, build resilience, and feel genuinely encouraged.

ISSA – Level 4 Trainer, Cambridge Mindfulness Meditation Certified, Psychology & Education, MPhil

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John Main

COACH

John is a strength and conditioning coach with more than 20 years of experience helping athletes, first responders, and everyday people move better, grow stronger, and stay active for life. Along the way, he’s founded and led gyms, built coaching systems for national fitness organizations, and taught seminars around the world as a senior instructor. From working with high-level athletes to creating adaptive programs for wounded service members, John brings a thoughtful, practical approach to training that meets people where they are and helps them feel capable. His work centers on long-term health, quality movement, and building real-world strength—so people can keep doing what they love, inside and outside the gym.

John is a Certified CrossFit Coach (CF-L4), Active Life Professional, POSE Running Technique and Training Specialist, The Brand X Method Certified Professional Youth Coach, USA Weightlifting Sports Performance Coach, and National Academy of Sports Medicine Certified Personal Trainer.

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Bryce Monroe

COACH

Bryce Monroe is a San Francisco native and former Division I basketball player. After graduating from Archbishop Riordan High School, he earned a scholarship to Sam Houston State University, where he was named Freshman of the Year, and later completed his collegiate career at Indiana University.

Bryce graduated in 2024 with degrees in Business and Health Education and is currently working toward his Master’s in Entrepreneurship and Finance. He’s passionate about injury prevention, training safely, and helping people build real strength, power, and confidence—all while having a good time along the way.

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SAMANTHA PINNEY

COACH

Samantha was born in New York City and raised in New Jersey.

She was an English major at St. Lawrence University and has since been a Project Manager by trade.

Sam’s athletic arc post-college = ski bum (Alta, UT), marathons, triathlons, Ironmans, mountain biking/racing, CrossFit, trail running/racing,and outrigger paddling/racing. She does it all!

Sam loves encouraging people, making people laugh, and sharing anything she’s ever learned in a sport with other people. She also loves putting together playlists, which comes in super handy as a class coach!

Sam loves Hazy IPAs, skiing, books, writing, the gym, and anything outdoors! She’s especially proud of being an Athlete of the Year for TJ’s Gym Corte Madera!

Sam has a CrossFit Level One Certification.

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TATUM ROBACH

COACH

Tatum’s journey with TJ’s Gym began long before she became a coach. Having trained there throughout her high school years, she developed a deep appreciation for disciplined training, performance, and the long-term impact of quality coaching. She went on to graduate from UC Davis in 2020 and has since dedicated her career to helping others build strength, confidence, and resilience through purposeful training.

As a NASM Certified Personal Trainer with a Performance Enhancement Specialization, Tatum is passionate about working with athletes and individuals of all ages who want to elevate their performance and reach meaningful fitness goals. With a background in competitive soccer and basketball, she understands the demands of sport and the importance of strength, speed, endurance, and injury prevention in long-term athletic development.

Outside of the gym, you can find Tatum biking, running, playing with her dog, or exploring new restaurants. She believes that staying active should enhance your life beyond the gym, helping you feel strong, capable, and ready for whatever you enjoy most.
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DANA SCHUMAN

COACH

A long-time TJ’s member, Dana took some time over the past few years to dive into training and earn various certifications, including a CrossFit Level 2 certification. In another life, Dana won two NCAA Division One titles as a member of the Penn State gymnastics team.

Dana has a Master’s degree in chemistry and an undergraduate degree in Kinesiology, so she gets the science behind what fitness! Mom of two boys and wife of TJ’s San Rafael staple, Dave, Dana is committed to her craft and is thrilled to be coaching at TJ’s giving back to a community that has given her and her family so much.

2x all American NCAA Division 1 CrossFit Level 2 certification CrossFit Mobility certification ACSM (American College of Sports Medicine) personal trainer ACE (American Council on Exercise) group fitness instructor Certified in Kinesiology Taping and RockTape FMT1 (Fascial Movement Taping Level 1)

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NICK LAPLANT

HEAD COACH AND PROGRAMMER

Nick grew up in Marin County and attended Tamalpais High School. He moved on to Humboldt State University, where he graduated with a B.S. in Kinesiology with an emphasis in Exercise Science. Nick earned a collegiate scholarship, competing in Cross Country and Track and Field (800m,1500m & steeple chase). During his senior year, he completed an internship at TJ’s Gym to earn hours for his undergraduate degree and was immediately drawn to the functional fitness program TJ’s Gym. Nick was especially intrigued by the mix of endurance training and strength development included in our approach and recognized that part of what makes it works so well is the strong community supporting positive life-changing habits–both in and out of the gym. A student of various other strength-training methodologies who is passionate about his ongoing learning and development of expertise, Nick is a sought-after asset to the TJ’s coaching staff. He is known for his exceptional attention to individual members’ needs, especially as they get started with a new exercise and lifestyle program. He is our Head Coach, programmer and also runs our Running Strong program.

In addition to coaching, Nick programs the workouts for all classes at TJ’s Gym and also works with clients via our Individual Design program. He is meticulous about the process of designing workouts for groups and individuals, alike.

Nick holds a Health Fitness Specialist Certification from the American College of Sports Medicine. *CrossFit Level One

GET STARTED

GETTING STARTED IS EASY!

Simply fill out the form below and then schedule Your FREE intro session on the next page.

Shortly after we will be in touch with you to confirm your intro session. We are excited to meet you!

(give our form below a second to load, we love you for it!)

TJ Belger

Founder/Owner

TJ hails from New Jersey. Those who know him best would say that the Jersey in him makes for some of the most appealing aspects of his character, including a powerhouse work ethic and an ability to relate effortlessly to people from all walks of life. A lifelong athlete who took time to grow into his large physical frame and excel at sports, TJ has always had a foot in the fitness realm. After college, he taught PE at a school in his hometown. While he liked the job, he decided there was more to explore; he moved west, landing in Marin County in 1992. After many years as a personal trainer, TJ opened his own gym in San Rafael in 2002, shortly before the birth of his first daughter. At that time, it was a place where he and other personal trainers could work with clients without the hassles of larger, less personal facilities.

While TJ loved his work as a personal trainer, by 2007 he found himself itching to expand his knowledge and recharge his training batteries. This happened when he found CrossFit, an exercise program involving functional body movements executed at high intensity and with great variety. TJ credits CrossFit for introducing him to a new way of thinking about fitness, and he still incorporates many elements of the methodology with his own clients and the thousands of Marin County people he has welcomed into the gyms over the years, creating his own brand of fitness and community.

Like that of many small business owners, TJ’s success can be attributed to a number of factors. However, those closest to him emphasize the same interpersonal qualities that allowed him to retain his first clients over 30 years ago. Although TJ holds certifications in various aspects of fitness training, he finds that it is his independent learning that has been most applicable to the success of his gyms. A driven researcher, TJ’s goal is to constantly delve into smart science behind fitness, health, medicine, nutrition, psychology, in order to adapt and innovate for the benefit of his members. His passion is helping people set goals, stay accountable, and lead better lives. He meets individually with everyone who walks through the doors of the gyms, a practice reflecting his deep desire to connect with each of his members and help them succeed in their fitness and lifestyle goals.

TJ feels fortunate to mentor and work with other fitness professionals who love their jobs and bring their own personalities and interests to his gym. He is most proud of the amazing community of people he and Allison have been fortunate enough to bring together at TJ’s Gym. While life is sometimes stressful and always very busy, TJ is inspired by the athletes in his classes, his personal coaching clients, and the daily opportunities he has to help people live longer, more fulfilling lives.

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ARE YOU LOOKING TO DROP-IN?

We Would Love To Meet You!
WARNING! Class Sizes Are Limited.

If you would like to reserve a spot… Simply fill out the form below letting us know what day you might come by & one of our amazing coaches will reach out to you to reserve your class.

OUR DROP-IN RATES

$35 Per Class

FIND US AT
118 Corte Madera Ave,
Corte Madera, California 94925

(415) -215-1253

OUR PRICING IS SIMPLE

We Want To Offer You The PERFECT Membership For YouR NEEDS.

Simply fill out the form below and one of our amazing coaches will send you our current membership information.