ABOUT US

From a Dream to a Community Movement

Rumble City Boxing was born out of a vision to create a clean, modern gym with old-school grit, where discipline, confidence, and community come together through the art of boxing.

Founded by Coach Cesar in 2020 in San Jose's Rose Garden area, the gym quickly became a haven for individuals of all ages and skill levels. From outdoor parking lot classes during the pandemic to launching our first Amateur Fight Team, every chapter of our journey has been defined by resilience, growth, and heart.

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Boxing gym with ring, punching bags, exercise equipment, and flags.

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Inside a boxing gym, with punching bags, weights, and open garage doors. Flags hang on the right.

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Our History

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2018

The vision was born with the founding of Rumble City Boxing.
Opened our first training location at Watson Park in San Jose, offering personal training sessions.

Group of people with hands stacked together, a sign of unity.

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2019

Rolled out structured classes for youth and adults, setting the foundation for growth and consistency.

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2020

Through cooperation and with the help of our Rumble City Boxing community, we obtained our first location, a 2,000 sq. ft. facility near Downtown San Jose.
Navigated COVID-19 pandemic challenges while continuing to serve our members.
Maintained resilience through challenges, adapting to pandemic restrictions by holding outdoor classes and operating at limited capacity.

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2021

Officially moved to 866 Park Avenue, a 4,000 sq. ft. facility defined by more space and upgraded equipment
Introduced Cardio kickboxing, widening our reach.

Boxing gym with black punching bags, gray mats, and a roll-up door.

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2022

Defying the odds, expanded further by obtaining an additional 2,000 sq. ft.
Expanded class schedule and hours.

Three young men holding certificates in a gym.

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2023

Launched new youth boxing program levels to empower the next generation of boxers.
Hosted our first successful sparring exhibition event open to the community.

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2024

Strengthened community ties with seasonal events and outreach initiatives, solidifying our role as a community hub.
Launched The Venue at Rumble City, opening our facility for community and private events.
Started working with government and community-based organizations to offer sponsorships to at-risk youth,

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2025

Continued commitment to excellence with youth graduations, staff development, and expanded class schedules.
Welcomed new staff specializing in muscle recovery and advanced training methods.
Positioned Rumble City Boxing as not just a gym, but a movement dedicated to discipline, community, and growth.

2026 (Vision)

Nonprofit Launch

Establish a nonprofit arm of Rumble City Boxing to serve at-risk youth and expand our impact through after-school programs, mentorship, and scholarships.

Bigger Competitions

Develop a fight team program that competes at state and national levels, bringing recognition to San Jose.

Amateur Competitions

Host our first USA boxing-sanctioned event.

Rumble City Foundation

Partner with schools and community organizations to bring boxing and fitness into classrooms, inspiring students across San Jose.

Community Legacy

Cement our role as the premier boxing and wellness hub in the Bay Area, known for building champions inside and outside the ring.

OUR MISSION

To offer high quality fitness classes in addition to education and development particularly in our next generation of young people, realized through the discipline and ethos of boxing.

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Group of teens and adults pose inside a gym. Some are smiling, others are squatting. Garage door visible.

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Group of boxers in a boxing ring, some raising fists. Bright setting, mixed ethnicity, gloves on, smiling.

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OUR VISION

To help as many people as possible achieve their physical and mental goals inside and outside of our facility in an effort to be resilient, happy, and successful.

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Our Core Values

At Rumble City Boxing, our core values shape everything we do, from the way we train to the way we support our community. These values guide our mission to help every individual grow stronger, physically, mentally, and emotionally.

COMMUNITY & INCLUSIVITY

We create a safe, welcoming environment where people of all ages, backgrounds, and fitness levels feel supported. Whether you're a first-timer, a competitor, or a child with special needs, you're part of the Rumble City family.

DISCIPLINE & HARD WORK

We believe growth comes from showing up consistently and pushing through challenges. Through structured boxing and strength programs, we help members build mental and physical discipline that carries into all areas of life.

EMPOWERMENT & CONFIDENCE

Boxing is more than a workout; it’s a tool for transformation. We teach individuals how to stand taller, speak louder, and trust themselves, inside and outside the ring.

EXCELLENCE & HIGH STANDARDS

From experienced coaching to our clean, professional facility, we are committed to providing the highest quality training experience. We meet members where they are, and push them to exceed their own expectations.

HEALTH & WELL-BEING

We care about the whole person. Our programs promote physical fitness, emotional resilience, nutrition awareness, and camaraderie, so members thrive in every aspect of life.

GROWTH & OPPORTUNITY

Whether it’s a child in our Power Pals program or an adult preparing for competition, we provide the tools, structure, and mentorship needed to grow. Every member is supported in becoming the best version of themselves.