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Meet Sean Sewell of Colorado Personal Fitness in Downtown Denver and Colorado Mountains

Today we’d like to introduce you to Sean Sewell.

Sean, can you briefly walk us through your story – how you started and how you got to where you are today.
I grew up enjoying the outdoors – hiking, camping, running, biking and anything in nature. I quickly realized that by incorporating functional training it improved the quality of life and made adventures easier to embark on.

My family is quite an inspiration for why I chose to become a fitness professional. My brother was special needs and morbidly obese. My sister was also disabled and of similar weight. Both parents were disabled and dangerously overweight as well. I could see a lot of the lifestyle choices directly contributing to their discomfort and limitations. Exasperated by their disabilities, it painted a clear picture of the “why” for me to help others with their health and fitness.

I understand that everyone has their own battles and can use a hand with their goals. It is my honor to help others; especially those have a lot to overcome, achieve a better quality of life.

I spent 15 years working in the corporate world before making fitness my full-time business. So I truly understand the struggles of the work/life balance and sitting at a computer all day. The epiphany to make health coaching my mission came after my brother passed at age 21, from a heart attack. He weighed 375lbs at the time. I knew I would not change anyone else’s life if I was working in an office.

So, I enrolled at NPTI in 2008, and have been training wonderful people ever since. I continue to take certifications at a rampant rate – StrongFirst, TRX, FMS, IKFF, NSCA, ACE and anything else I can learn to help my students.

Overall, has it been relatively smooth? If not, what were some of the struggles along the way?
Owning your own business can be challenging, but it is worth it. The rewards come in daily, seeing the people you care about achieve life goals. Receiving pics and emails from clients on adventures and/or taking them on mountain hikes and backcountry skiing is so fun. I have no issues with the demands of running a business that serves others.

In fact, I run three! Colorado Personal Fitness is in-person fitness training. Mountain Fitness School is my online fitness training school for those not in Denver. It is a self-paced program full of instructions and programming – and all shot in the mountains of Colorado! is my gear review website. We (the talented writers and I) work with brands such as Patagonia, North Face, Black Diamond, Hoka, Mammut, Mountain Hardwear and hundreds more – providing detailed reviews, trip reports, and outdoor industry news.

Alright – so let’s talk business. Tell us about Colorado Personal Fitness – what should we know?
Colorado Personal Fitness is celebrating over ten years of helping our students achieve personal fitness goals and create a healthy lifestyle. Most of the people we work with are middle age corporate workers with a busy life. It is my goal to create safe, challenging and results-based programs for them. I volunteer at the Rose Hospital Bariatric Progam to help those who are new (and often intimidated) to fitness. I volunteer with the Special Olympics as it is near and dear to my heart (my late brother enjoyed their programs!).

I use bodyweight, TRX and kettlebells to train and condition our clients for their health and fitness goals. No machines, no cardio equipment, no judgment. Just simple and effective training so they can get back to their busy lives.

I am internationally recognized as the go-to mountain fitness expert. I don’t really believe in the “expert” title, LOL, but I will go with it. I wrote the book on Splitboarding (it is available on Amazon) have written papers with Pavel (yes that Pavel!) and Eric Frohardt (Purple Heart recipient, retired NAVY SEAL) and created several online fitness courses.

What sets me apart from other fitness coaches is sincere empathy, love, laughter, and kindness. I often take clients out for mountain adventures, coffee, or other fun activities. I get to know them very well and consider them part of our extended family.

Any shoutouts? Who else deserves credit in this story – who has played a meaningful role?
This is going to be a LONG list, as there are several great people that have helped me on this path!

My family – for being the inspiration to pursue fitness and helping others.

Phil Ray Owner of National Personal Trainer Institute – for welcoming me into the NPTI family and paving the way for my business.

All the instructors at Strong First, TRX, IKFF, FMS and every other organization I have learned from.

Especially thankful for Pavel, Eric Frohardt, Brett Jones, Karen Smith, Ken Blackburn and Zar Horton for their excellent mentoring and teachings.

My wife, Samantha, for her support and understanding on the long days.

All of the great people I get to work with at Push Gym and Brownstein Hyatt Farber Schreck.

Of course, I would not be here without the hundreds of great people I have worked with over the last decade and the ones I get to coach currently. <3


  • Mountain Fitness School Online Course $59-279
  • One on One in Person Training $70 45 minutes
  • Small Group (2-6 people) Training $35 per person
  • Full Day Mountain Fitness Training and Adventure in Colorado $1500

Contact Info:

Image Credit:
Sean Sewell, Aaron Rose, Zach Birmingham

Getting in touch: VoyageDenver is built on recommendations from the community; it’s how we uncover hidden gems, so if you know someone who deserves recognition please let us know here.

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