Step Into
Your Strength
Welcome to Natural Selection CrossFit—Tri-Cities' longest-standing community dedicated to making you healthier, stronger, and more confident.
Welcome To Natural Selection CrossFit
Welcome to Natural Selection CrossFit. Not just a place to get healthy and stronger, but a community of people who push you to be the best version of yourself you can be.
Natural Selection CrossFit started in 2010 with three men who wanted to have fun and have somewhere to workout. Shortly after our Owner/Head Coach Leo Barillas took ownership and grew the gym to what it is today. A loving environment of coaches that love to see you succeed. Natural Selection CrossFit is the longest standing CrossFit gym in Tri Cities and is excited to aid in your fitness journey.
- Longest standing CrossFit gym in Tri Cities
- Expert Coaching & Supportive Community
- World-Class Equipment
Training That Fits Your Life
Whether you want guidance, community, or just a great place to lift on your own schedule, we have you covered.
Unlimited CrossFit Membership
Experience the full power of our community with unrestricted access. This membership includes unlimited coach-led group classes, specialized Olympic lifting sessions, and full access to our world-class facility during open gym hours. Perfect for those committed to maximum progress, total immersion in the CrossFit lifestyle, and faster results through consistent training.
3x/wk CrossFit Membership
A flexible option designed for busy lifestyles. This membership grants you three visits per week to any of our coach-led CrossFit classes, Olympic lifting sessions, or open gym times. It's the ideal balance for maintaining consistency while managing a demanding professional or personal schedule, ensuring you stay fit without the overwhelm.
Reborn Membership
Specifically designed for those returning to fitness or starting from scratch. Our 'Reborn' program offers three sessions a week in a supportive, lower-intensity environment. We focus on building a solid foundation, improving mobility, and boosting confidence through fundamental movements before transitioning into standard CrossFit classes.
Meet Head Coach
Leo Barillas
As a young athlete in middle school and high school, I always had a passion for fitness. Shortly after graduating High School I shipped out for boot camp to MCRD Camp Pendleton to become a United States Marine. My athletic background and drive aided me in being at the top of my graduating platoon.
While in the Marines I found CrossFit and got many certifications. After falling in love with the sport I decided I wanted to open up a CrossFit gym. I got out of the military and moved back to Tri Cities Washington shortly after having my first born.
I started volunteering at Natural Selection CrossFit and was offered ownership by the owners at that time, because they noticed the value I brought to the table. I am now the sole owner of Natural Selection CrossFit and have big plans for the future.
Welcome to Natural Selection CrossFit. Step into your strength.
What Our Members Say
Don't just take our word for it. See why Tri Cities locals choose Natural Selection CrossFit for real results.
Real People. Real Results.
Join a community that celebrates your wins and pushes you to be your best self.
Ready To Change Your Life?
Your membership isn't just door access — it's guidance, belonging, and genuine change. Memberships are open now.
Ready To Give Us A Try?
Get Your Free Intro Session!
You are 3 steps away from reclaiming your strength and energy.
1. Click Get Started
2. Fill Out Your Info
3. Pick A Time To Come In
Frequently Asked Questions
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