Grinders Fitness

Grinders Fitness

Northglenn, Colorado | 5.0
5.0 (109 reviews)

Grinders Fitness is a boxing gym located in Northglenn, Colorado. Specializing in Traditional Boxing and MMA & Boxing. Rated 5.0 out of 5 by community members.

Reviews

Willia Gray
Willia Gray 4 months ago

I signed up for a free class and let me tell you! I was so worried I won't fit in or do very good. Everyone was so nice and showed me everything I needed to know! I enjoyed it so much I am taking the six-week Challenge! LET'S GO!!

Owner Response · 2026-01-10T00:58:39.000Z

Thank you, Amanda! We're thrilled to hear you felt welcomed and enjoyed your free class. Your enthusiasm for the six-week Challenge is inspiring. We look forward to supporting you on your fitness journey!

Aimee Bearden
Aimee Bearden 7 months ago

I just finished the 6 week challenge with Grinders Fitness and plan to continue my membership here. The owner and the teachers are humble, friendly, and helpful and the people in the class are super friendly as well! The classes are so fun!

Owner Response · 2025-10-29T20:04:30.000Z

Thank you, Aimee! We're thrilled to hear you enjoyed the 6-week challenge and found our community welcoming. Your continued membership means a lot to us. Looking forward to seeing you in class!

Josh Schmunk
Josh Schmunk Local Guide 7 months ago

Grinders Fitness is the real deal. Whether you’re just starting out or you’ve already got some ring experience, there’s something for every skill level. It’s not your typical “boxing-inspired cardio” spot like Rumble, Title, et al - there are former pro and amateur fighters teaching that will help you level up. The class schedule is convenient, and my favorite part - there’s light sparring twice a week. If you’re on the hunt for a boxing gym, look no further than Grinders Fitness.

Owner Response · 2025-10-23T09:46:16.000Z

Thank you, Josh, for your fantastic review! We're thrilled to hear that you appreciate our diverse classes and experienced trainers. Your support motivates us to keep delivering exceptional training experiences. See you in the gym!

chikilin303
chikilin303 8 months ago

Grinders fitness has show me It is an excellent program, the coaches, the colleagues, the environment motivates you to move forward and continue striving for your goals. I started at 370 lbs and now I am at 352 lbs. In just 4 weeks, the nutritional plan and the consistency of the coaches motivates you daily.

Owner Response · 2025-10-23T09:46:18.000Z

Thank you for your outstanding review! We're thrilled to hear about your progress and the positive impact our program and coaches have had on your journey. Keep up the great work!

Andres Lau
Andres Lau 9 months ago

Been going here almost three years now. Awesome gym with great striking and grappling training. Shannon and Albert are both super knowledgeable and technical in their instruction and coaching, both with black belts in Brazilian Jiu Jitsu and super impressive resumes in the professional MMA scene. The environment is incredibly welcoming, regardless of your level. The sparring here is super technical—no egos, just solid work. The cardio classes are intense and push you, but it’s worth it. I’ve dropped weight, feel way healthier, gotten stronger, and found a great community of great people. Can’t recommend this place enough!

Owner Response · 2025-10-23T09:46:28.000Z

Thank you, Andres, for your fantastic review! We're thrilled to hear about your positive experience and progress at Grinders Fitness. Your dedication and enthusiasm inspire our community. We look forward to seeing you continue to thrive!

Contact Information

455 W 115th Ave #4
Northglenn, Colorado