About 5280 CrossFit

About Jason Grubb, Owner

Founder & Owner, 5280 CrossFit

Before and After Jason Grubb at 5280 CrssFit

I started CrossFit just over 3 years ago… After years and years of running and biking, I wasn’t satisfied with the way I felt or looked. Yep, I was quite a bit thicker and significantly lacked mobility in my shoulders and hips.

As a wedding photographer, a 10 hour day of shooting would crush me… So would 20 push ups. After one CrossFit workout, I was hooked. I felt like I accomplished so much in one hour!

Today, as a 41 year old with 4 kids (two under the age of 4), I’m in the best shape of my life. I love working hard, experiencing dramatic results, feeling strong, and knowing I’m healthy.

Meet the Coaches

Jason Grubb

Jason Grubb

Owner | Coach

Jason is a competitive CrossFit athlete who loves the Colorado outdoors. As a husband and father of four kids (from teenagers to a toddler), he aims to stay healthy and fit for the long run. He fully intends to engage in sports, hiking, backpacking, and fly-fishing with his kids well into their adult years. Jason was a competitive gymnast through his teenage years and enjoyed running and cycling through his twenties and thirties. He discovered CrossFit at age 38 and fell in love with the community, the challenge of the workouts, and the results.

Jason doesn’t consider anything from Apple, REI, or Macallan an indulgence. He prefers shorts to jeans and would love to never wear a suit again in his life – if at all possible. Colorado has always been, and will always be his home.

  • CrossFit Level 1 Certificate
  • CrossFit Level 2 Certificate
  • CrossFit Gymnastics Certificate
  • CrossFit Weightlifting Certificate
  • Adult CPR/AED and Child CPR
Samantha Hartwell

Samantha Hartwell

General Manager, Head Coach, Personal Trainer, Nutrition Coach

As a San Francisco native, Sam grew up with a love for playing sports. She dedicated a majority of her time to volleyball and continued playing and coaching at the Division 1 level. After college, she focused on endurance sports and has competed in numerous marathons and half-marathons. When she was introduced to Crossfit, she was hooked! She loves the challenge and camaraderie of the Crossfit community! As a coach, Sam enjoys helping people be happier, healthier and stronger through Crossfit.

When she is not in the gym Sam enjoys camping, competing in triathlons, hiking, cooking and enjoying everything that life in Colorado has to offer with her boyfriend Scott and two dogs Harley and Tucker.

  • CrossFit Level 1 Certificate
  • CrossFit Level 2 Certificate
  • Precision Nutrition Level 1
  • Adult CPR/AED and Child CPR
Deidre Helton

Deidre Helton

Coach, Personal Trainer, Nutrition Coach

Deidre is a Colorado native who has been coaching CrossFit since 2013. She fell in love with the training style after attending class with her yoga mentor and was immediately addicted. For her, CrossFit allows her to stay healthy and build a strong body for life. In 2015, she quit her corporate job to pursue coaching full-time. She loves helping athletes see the full potential of their bodies.

Deidre attended the University of Denver where she received a degree in Journalism, and continues her craft as a freelance writer. When she’s not in the gym, Deidre enjoys hiking, camping, trail running, snowshoeing, and rock climbing – basically anything outdoors.

  • CrossFit Level 1 Certificate
  • CrossFit Level 2 Certificate
  • CrossFit Movement and Mobility Certificate
  • NASM Certified Personal Trainer
  • Precision Nutrition Level 1
    Institute of Integrative Nutrition Health Coach
  • CorePower Yoga Sculpt Instructor
  • Adult CPR/AED and Child CPR
Erin Murphy

Erin Murphy

Coach, Kids/Teens Coach, Personal Trainer, Nutrition Coach

Erin found CrossFit while studying Exercise Science at Fort Lewis College in 2013. Originally from the Chicago area, she explored several areas of the country and taught kids in Thailand before happily making Denver and 5280 CrossFit her home. CrossFit provides the wonderful combination of competition, community, nutrition and fun that keeps her motivated. Helping people of all backgrounds, ages, and abilities thrive and see that fitness can be something they enjoy is what makes coaching her happy place. She plans to use CrossFit as a way to stay strong and healthy throughout her life and wants to help others do the same.

Nothing puts a big smile on her face like pistol squats, outdoor adventures (in the sun or snow) and feeling her best, but she does struggle with eating copious amounts of peanut butter, spicy foods and enjoying a good beer. Nobody’s perfect, right?!

  • CrossFit Level 1 Certificate
  • CrossFit Kids Certificate
  • Adult CPR/AED and Child CPR
  • CrossFit Movement and Mobility Certificate
Callie Moore

Callie Moore

Yoga Instructor

Callie started practicing yoga in 2002 in Austin, TX. Her connection to mind, body and health through the practice inspired her to start her journey as a teacher. She completed her first 200-hour teacher training in 2008 in Boulder, CO to deepen her practice. Additionally, she completed advanced trainings at Corepower in 2013 and has been teaching ever since. Callie has led numerous teacher trainings for both new and seasoned teachers.

She has a passion for health and a desire to help people live to their fullest potential!

  • Level 2 Power Yoga Certification

We Believe: Fitness Is Good for Everyone

We combine the best and most effective elements of conditioning, body weight movements and weightlifting to create an easily tailored fitness experience for people of all ages and fitness levels.

We incorporates many common, everyday movements into training. Think of moving from sitting to standing up, picking up something from the ground, or putting luggage in an overhead compartment. Those movements (and many others) are then combined into varying combinations to form high-intensity workouts. These workouts are quick, very effective, and never boring.

We Believe: Nutrition Is The Foundation for Health

Nutrition lays the foundation for health, fitness and longevity. Finely tuned, a good diet will increase energy, sense of well-being and acumen, while simultaneously reducing fat and increasing muscle. When properly composed, the right diet can move every important quantifiable marker for health in the right direction.

Nutrition is critical to optimizing human function, and 5280 CrossFit is here to help you implement a personalized nutrition plan that works for you and your life.

Become a Member

Community is a staple in our fitness philosophy at 5280 CrossFit. Not only do our members enjoy becoming healthy and fit through personal training and group classes with their friends, they enjoy community events such as BBQ’s, girls/guys night outs, a big Holiday Party, outdoor WODs, and much more!

Community reminds us all that we are all on a similar journey towards health, fitness and longevity. People from diverse backgrounds and fitness levels workout together, celebrate together, and sweat together. The community you find at 5280 CrossFit will welcome, motivate, and inspire you.

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“The magic is in the movement, the art is in the programming, the science is in the explanation, and the fun is in the community.”

– Greg Glassman, Founder of CrossFit

Ready to Get Started?