1250 Harrison Street
Seattle, WA 98109
Coming Soon
RockBox Fitness
South Lake Union
The Ultimate Strength Training and Kickboxing Experience in Seattle
When you join RockBox, you’re not just signing up for a gym; you’re entering a lifestyle change. Here’s what you gain:
Fast and effective
Each 50-minute class keeps you moving with fresh challenges and music every time.
Build strength
and endurance
and endurance
Weave through 8-12 high-energy boxing stations designed to keep you engaged and challenged.
Never get bored
Experience over 900 functional moves as you punch, kick, lift, and pull your way to bigger results.
Inside our RockBox studios
Hear from
RockBox Members
RockBox Fitness South Lake Union is coming soon
RockBox Fitness delivers powerful kickboxing and strength training that transforms your body and ignites your confidence. Our 50-minute classes combine authentic boxing techniques with high-intensity workouts for all fitness levels. Join Seattle's supportive community where beginners and experienced athletes crush their goals together.
Frequently asked questions
Why is RockBox the best kickboxing gym in Seattle?
South Lake Union offers a unique 50-minute boxing-based fitness experience that combines kickboxing, strength training, and functional fitness. Our expert trainers guide you through every workout step by step, ensuring all fitness levels can participate safely and effectively. Unlike traditional gyms, our classes are never the same twice, keeping your body guessing and preventing weight loss plateaus. We provide all equipment including gloves and wraps, offer beginner orientations 30 minutes before your first class, and have built a supportive community where members feel like badass athletes while having fun and getting the best workout of their lives.
Is RockBox good for beginners with no kickboxing experience?
Absolutely! RockBox specializes in welcoming complete beginners to kickboxing. Our expert trainers coach you through every workout step by step, and everybody works at their own fitness level regardless of experience or physical ability. We ask that first-timers arrive 30 minutes early for a complimentary orientation where our trainers will show you how to throw the punches and kicks you’ll use in class, plus you’ll get to practice before you start. Remember, we only hit bags, not each other, so there’s no intimidation factor – just an amazing workout that will make you feel strong and confident.
What should I wear and bring to my first RockBox class?
Wear comfortable athletic clothing that allows full range of movement – athletic shorts or leggings, a fitted t-shirt or tank top, and supportive athletic shoes (cross-trainers work great). You don’t need to bring gloves since we have them available to rent or buy at the front desk for a reasonable price, or you can bring your own if you prefer. We also have slip-on gel wraps and traditional hand wraps for sale that protect your wrists and hands. Just bring a towel because you’ll torch calories and sweat, plus a water bottle to stay hydrated (we also sell bottled water and have water dispensers available).
What kind of results can I expect?
RockBox kickboxing delivers incredible results for your entire body and mind. You can burn up to 1,000 calories per 50-minute class while building lean muscle, improving cardiovascular endurance, and increasing overall strength. Our boxing-based workouts enhance muscle tone, core stability, flexibility, and coordination. ESPN ranked boxing as producing the best overall athletes after evaluating all major sports for fitness, strength, conditioning, speed, and power. Members typically see improvements in energy levels, confidence, sleep quality, and stress management within just a few weeks. Whether your goal is weight loss, building strength, improving fitness, or just feeling amazing, RockBox delivers the results you’re looking for through our unique combination of kickboxing and strength training.
Do I need to bring my own gloves and wraps?
We provide everything you need! Gloves are available to rent or buy from our front desk. We have both slip-on gel wraps and traditional hand wraps for sale that protect your wrists and hands during bag work. Both types of wraps are machine-washable and can be used again and again. While you’re welcome to bring your own gloves if you prefer, it’s completely optional – many of our regular members love the convenience of using our equipment. We also maintain and sanitize all equipment daily for your safety and hygiene.
When should I arrive for class?
For your first visit, please arrive 30 minutes early for your complimentary orientation, where our trainers will teach you proper punches and kicks and show you around the studio. Regular members should arrive 5–10 minutes before class for check-in. Our minimum age is 14 with a parent in attendance, or 16 without a parent (minors need parent/guardian signature). Contact us for directions or any questions about getting started with your kickboxing journey!
What are the benefits of boxing and kickboxing training?
Boxing and kickboxing training at RockBox delivers incredible benefits for both your body and mind. You’ll experience improved cardiovascular fitness, increased muscle tone, enhanced muscular endurance, better strength and power, improved core stability, and increased overall flexibility. Boxing is also the ultimate stress relief activity – there’s nothing quite like hitting a bag after a long day! The combination of technique, cardio, and strength training creates lean, strong physiques (that’s why Hollywood stars and top models use boxing to get into magazine-cover shape). Plus, you’ll develop better coordination, balance, and confidence that carries over into every area of your life.
When is RockBox Fitness South Lake Union opening?
We’re putting the finishing touches on our South Lake Union studio and can’t wait to welcome you in. Check back soon for our official opening date, class schedule, and founding member offers. In the meantime, follow us on social media to be the first to hear updates straight from the South Lake Union team.