Built for Adversity, Backed by the Crown.
Grand Opening Coming SoonA new martial arts & MMA academy is coming to Blue Springs, Missouri — Jiu-Jitsu, Kickboxing, MMA, and Judo for adults, youth, and kids. We're not open yet, but we're enrolling founding members now.
Your first class is on us when we open. Reserve your spot and we'll reach out with your start date.
Competitive, family-friendly training in a brand-new, state-of-the-art facility — built for every skill level, from first-timers to competitors.
Crown City Athletics is opening as a Blue Springs martial arts academy where students train with elite coaches dedicated to helping them grow on and off the mat. From Jiu-Jitsu and wrestling to boxing, kickboxing, and the full range of MMA training, our coaches will offer personalized instruction for every athlete.
Our kids' martial arts classes are built around anti-bullying tools and strategies, and our youth programs give younger students structure, discipline, and confidence. Beyond the mats, a dedicated recovery space — sauna, cold plunge, and massage therapy — is planned to help your body heal and thrive.
When the doors open, you'll find a competitive, welcoming community for camaraderie, mental-health enhancement, and stress relief — plus in-house competitions, seminars, and appearances from renowned instructors.
Our 2026 opening is led by the partnership of Hunter Jenkins and John O'Brien — training partners who have cornered each other through numerous MMA bouts. The name comes from Kansas City's nickname, "Crown City," symbolizing ambition, excellence, and leadership. Our mission is to give back to the Kansas City and Blue Springs communities through the values the sport instills.
A full martial arts and fitness curriculum for every age and goal — competition, self-defense, fitness, or confidence.
The core of the academy — technical grappling for all levels, in both Gi and No-Gi, with a dedicated Women's Only class.
Stand-up striking and conditioning — footwork, combinations, and a serious workout, beginner-friendly from day one.
Striking, wrestling, and grappling brought together. Train the complete mixed-martial-arts skill set with expert coaches.
Gi and No-Gi Judo — grip fighting, throws, and takedowns that sharpen every other part of your game.
Kids Martial Arts for ages 4–7 and Youth Jiu-Jitsu & MMA for ages 8–17 — with anti-bullying tools built into the curriculum.
Top-of-the-line strength and lifting equipment, plus a planned recovery space: sauna, cold plunge, and massage therapy.
This is our launch schedule. Times may be adjusted before opening — reserve a trial and we'll confirm your class.
Rest day — no classes scheduled.
More than a gym — expert coaching, a real community, and everything built to help you thrive on and off the mat.
Rooted in the Kansas City and Blue Springs martial arts community, with a culture that supports every skill level, background, and personality.
Head coaches with diverse backgrounds — including professional bouts — who break down the fundamentals like few others can.
Our kids' curriculum builds in real anti-bullying tools, giving students the confidence and skills to stand up to it.
Beyond MMA and strength training, a dedicated recovery space — sauna, cold plunge, and massage — is coming soon.
A state-of-the-art academy with top-of-the-line MMA and strength equipment in a welcoming, warm environment.
Every athlete's journey is different. Coaches tailor training to your goals — competition, self-defense, fitness, or confidence.
A competitor and coach who has trained and cornered alongside John through numerous MMA bouts, now bringing premier professional training to Blue Springs.
Hunter's longtime training partner and corner, united in the vision to deliver elite coaching and a thriving community atmosphere.
We proudly welcome students from across the eastern KC metro to train in Blue Springs — all ages and skill levels, high-quality instruction close to home.
Reserve your free trial class now and sign your waiver online — we'll save your spot and reach out with your start date the moment we open.
Grab your free trial class, then knock out the waiver online so you're ready to train the day we open — no paperwork at the door.
Reserve your free trial class online in about a minute — pick your class and day, and sign your waiver right from your phone. Your spot and signed waiver go straight to Crown City Athletics.
Opens our secure Crown City sign-up page.
No paperwork to print — your Waiver & Release is handled online when you reserve your spot. Book your free trial class and we'll send your waiver to sign from your phone; once it's signed, it saves straight to your member profile.
You'll complete and e-sign the full Waiver & Release of Liability as part of getting started — nothing to fill out here first.
Just off 7-Highway south of I-70 — next to Subway, in the Hobby Lobby parking lot.
Class times are listed in the schedule above. Staffed hours begin at grand opening.