About River City Strength in Castle Hills, TX

We Built our Personal Training Around You

River City Strength is our dream, built with you in mind. Our coaches are highly skilled professionals with top-tier communication skills and elite programming. Each coach brings a unique energy and skillset, but they all create a warm, welcoming atmosphere for beginner and any adults who want to feel stronger and healthier.

Zero Intimidation Environment
Zero Intimidation Environment
Professional Coaching
Professional Coaching
Elevated Customer Care
Elevated Customer Care
Book Free Intro
best training community at River City Strength
ABOUT River City Strength

This is Our Team

We are a group of committed full-time professional coaches, here to help you take your fitness and health to the next level. Through intelligent programming, encouraging instruction, and real-talk accountability, our coaches guide you from where you are to where you want to go.

best training coaches at River City Strength
team
Jesse Medellin owner of River City Strength
Jesse Medellin
Founder Circa 2019

Founder’s Story

I opened River City Strength in 2019 after nearly two decades as a strength conditioning coach and personal trainer. I started it because I saw too much of the fitness industry built on unrealistic promises and bait-and-switch deals. My philosophy is simple: listen to people, understand where they are and where they want to be, and build a plan that actually fits their life. Strength looks different for everyone. For some it’s confidence. For others it’s the ability to travel, keep up with family, or just feel better. My job isn’t to tell you what you should do. It’s to help you figure out what matters to you and guide you there.

Our Coaches

Daniel Rivera coach at River City Strength

Daniel Rivera

Program Design & Coach Development

Certifications

B.S. in Kinesiology (Exercise Science) - University of Texas at San Antonio
Certified Pain-Free Performance Specialist - Dr. John Rusin
Certified Physical Preparedness Specialist - C.P.P.S. Academy
Functional Movement Screen Level 2 - Dr. Gary Cook
Barbell Rehab Method Certification - Dr. Michael Mash

I’ve been coaching for nearly 10 years and joined River City Strength in 2020. I specialize in functional strength, post-rehab training, and injury prevention.  My coaching style is patient, structured, and rooted in the belief that training should work with your body, not against it, specifically focusing on helping busy adults build strength safely and sustainably.

Certifications

B.S. in Kinesiology (Exercise Science) - Lionel University
Certified Master Trainer - International Sports Science Association
Certified Nutrition Specialist - International Sports Science Association
Certified Pain-Free Performance Specialist - Dr. John Rusin
Barbell Rehab Method Certification - Dr. Michael Mash

I joined River City Strength in 2021 and bring over a decade of coaching experience. A Marine Corps veteran, I’ve worked with people of all ages and fitness levels. I genuinely love the mental side of fitness: watching movement boost mood, build confidence, and make life feel more positive, especially for people navigating real challenges or setbacks. My style is energetic and personal, blending discipline with fun, and I believe every win — no matter how small — is worth celebrating.

Marco Villanueva coach at River City Strength

Marco Villanueva

Coach
Erin Capetillo coach at River City Strength

Erin Capetillo

Member Experience Coordinator & Coach

Certifications

B.S. in Kinesiology (Exercise Science) - University of Texas at San Antonio
Certified Pain-Free Performance Specialist - Dr. John Rusin
Barbell Rehab Method Certification - Dr. Michael Mash

I joined River City Strength in 2024 and love helping busy adults move better, feel stronger, and build real confidence in the gym. As the Member Experience Coordinator, I make sure you have all the tools you need to be successful. As a coach, I focus on the fundamentals: consistency, proper movement, and accountability. Whether you’re not sure where to start or just need someone in your corner, my goal is to make the process feel approachable, attainable, and comfortable.

coaches
strength equipment at River City Strength
personal training space at River City Strength
strength equipment at River City Strength
personal training space at River City Strength

Clean and Well-Maintained
Equipment is the Standard

At RCS, we pride ourselves on providing top-of-the-line equipment to ensure our members have the safest, most effective training possible. Our facility is equipped with premiere manufacturers in the fitness community, enhancing your training experience. We are one of the only private facilities in Texas with Samson Functional Training Racks and offer a variety of specialized equipment and low impact modalities. With our extensive range of equipment, River City Strength is committed to helping busy adults uncover a stronger and healthier lifestyle.

Strength Equipment – Our strength area implements joint-friendly and specialized equipment to build strength safely, even for members new to the personal training studio.

Individual Training Space – You’ll have your own designated space and equipment to ensure safe and efficient training sessions.

equipment

A Facility Designed for
Performance & Community.

River City Strength boasts a spacious, open-layout facility designed to maximize your training experience. From state of the art equipment to dedicated recovery tools, every detail of our facility is designed to ensure a safe, efficient, and effective training session.

best gym near me best training coaches at River City Strength
facilities

That’s Us.
Let’s Learn About You!

We’ve had a blast telling you a bit about ourselves. But this isn’t about us, it’s about you. Your journey, your goals, your results. So let’s get to know each other, set some life-changing but attainable goals, and welcome you to our supportive community.

Book Free Intro
old man training with a kettlebell at River City Strength
free intro