Meet The Coaches

Our coaches help people of all different fitness levels. We train to enjoy life’s outdoor adventures as well as to get fit & live healthy lifestyles.

April DiGiannantonio - Gym Owner- CrossFit L2 Coach

- Gym Owner- Coach -

April DiGiannantonio

April has been CrossFitting since 2011 and extremely active outside the gym whether running, biking, skiing, hiking, or golfing. Her love of coaching CrossFit is contagious which sets the tone for high energy and motivating classes. She has a competitive nature and enjoys competing individually and with a team in competitions around Colorado and at the regional level. She graduated from The Culinary Institute of America in New York and has worked in restaurants around the world. April offers Nutritional and Personal Programming to her clients to promote healthy eating and personal growth.

We strive to develop clients who want to improve strength, endurance, athleticism, lifestyle, and competitiveness. Whether you want to workout twice or six times a week, lose weight or gain strength through Olympic lifting we welcome anyone who has the passion to work hard and strive for greatness!


  • CrossFit Level 1
  • CrossFit Level 2
  • NCI Nutrition Coach Specialist, Level 1
  • Starting Strength Certification 
  • CrossFit Gymnastics
  • i99 Gymnastics Coach Certification 
  • USA Weightlifting Level 1 Sports Performance
  • CrossFit Powerlifting
  • CrossFit Kids
  • CrossFit Endurance
  • Opex CCP Level 1 – Program Design
  • Opex CCP Level 1 – Nutrition
  • CrossFit Kettlebell
  • Think Tank Energy Systems Program Design
  • Think Tank Energy & Strength Systems 
  • Bachelor's in Finance and Entrepreneurship
  • Masters in Business Administration
  • Exercise Science degree in progress 

• 2016 – 28th Place CrossFit Games South Regionals Team

• 2015 – 30th Place CrossFit Games South Regionals Individual

• 2014 – 7th Place The Crush Games Pro Division, Miami FL

• 2014 – 7th Place CrossFit Games South West Regionals Individual

• 2014 – 3rd Place The Fittest Games (Pro Division) Austin, TX

• 2013 – 1st Place Wyoming Open Pro-Division

• 2013 – 17th Place CrossFit Games South West Regional Team

Jake Eustrom Head Coach - Manager

- Head Coach - Manager -

 Jake Eustrom

Jake started coaching in 2012 after receiving his CrossFit Level 1 certification, he has also spent a good amount of time in the medical industry as a field and clinical EMT before becoming a full-time CrossFit coach. Jake's passion for fitness, nutrition, and teaching enables him to offer and extend his knowledge to those that have the desire to make a change in their lives. In Jake's opinion, CrossFit is not only about fitness and health but also a chance to challenge one's mental and emotional boundaries. If you have the desire to overcome physical, mental and emotional limitations then CrossFit 720 is definitely for you!

  • CrossFit Level 1

  • CrossFit Level 2

  • Starting Strength Certification 
  • Westside Barbell Special Strengths Certification
  • i99 Gymnastics Coach Certification 
  • CrossFit Kids 



  • 2016 28th Place CrossFit Games South Regionals Team


Griffin Zigrang - CrossFit Coach - Nutrition Coach New Member Coordinator

- Fitness Coach -
Nutrition Coach
New Member Coordinator

Griffin Zigrang

Griffin was introduced to CrossFit in 2011 when she stumbled upon and started doing the WODs at her local globo gym. She was immediately hooked. After moving to CO in 2014 she joined her first affiliate at CrossFit Ken Caryl, and a few months later, found her place at CrossFit 720.

Griffin was a gymnast from the time she could toddle until she was a 14-year old Level 9/10. She was forced to quit due to scoliosis and the inevitable, spinal fusion surgery. After surgery, she moved on to power tumbling, competitive cheerleading, and competitive dance, but gymnastics was a passion that, years later, she still hasn't gotten over. You will see evidence of this in her classes as she focuses on movement, proper body positions, and strict strength.

Pre-CrossFit, Griffin earned her Bachelor of Science in Psychology from Longwood University and Master of Art in Organizational Behavior and Program Evaluation from Claremont Graduate University. She did program evaluation work in the public sector, both at the federal and local levels, for six years before acknowledging that the fitness world was where she needed to be.

  • CrossFit Level 1
  • NCI Nutrition Coaching Specialist, Level 1
  • i99 Gymnastics Coach Certification 
  • CrossFit Gymnastics
  • CrossFit Kids
  • USA Weightlifting Level 1 Sports Performance
  • Training Think Tank – Energy & Strength Systems
  • BS in Psychology
  • MA in Organizational Behavior and Program Evaluation
Justin Biays Crossfit 720 Coach Denver, CO

- Fitness Coach -

Justin Biays

Justin is a combat veteran serving four years as an 11B (Infantry). After leaving the Army in 2013 he pursued a career as a full time Strength and Conditioning coach, earning his Bachelor's and Master’s degree in Exercise Science.

Justin Found his love for fitness in 2011 while deployed in Afghanistan, and has dedicated his life to helping others achieve their athletic goals. He has a strong interest in developing Strength and Conditioning programs geared towards improving performance in all areas of fitness while reducing and mitigating injury.

  • CSCS- Certified Strength and Conditioning Specialist (NSCA)
  • TSAC-F- Tactical Strength and Conditioning Facilitator (NSCA)
  • USAW- SP
  • NASM-Certified Personal Trainer NASM-Performance Enhancement Specialist
  • CrossFit Level 1
  • CrossFit Specialty Course- Conjugate Methods
  • OPEX CCP- Program design
  • OPEX CCP- Assessment
  • OPEX CCP- Nutrition
  • EMR- Emergency Medical Responder


Bachelor of Science, Exercise Science, Minor: Sports Nutrition

Masters of Applied Exercise Science, Human Movement


  • 2016 Regional athlete, Team CrossFit 720
  • Turkey Challenge Pro Division 2015, 2016, 2017, 2018
  • International Functional Fitness League team qualifier 2017


Crossfit Denver Coach

- Olympic Lifting Coach -

Savannah Fearns

Savannah found CrossFit in 2012 while attempting to shake off some weight. Having grown up playing soccer, swimming, snowboarding and being raised in the military, physical activity has always been a necessity. But even after joining the military herself, she still managed to fall into a funk. She dropped the weight, yet felt weak until she found a group of CrossFit inspired friends at the base gym. This gave her a new respect for strength and weight gain and from there she took it by storm. Realizing the liberating effect the iron therapy had on her life and many others, she proceeded to get her Level 1 in 2014 and could only hope to share the same joy that she’s had with her new found health.
Since then she has coached at 5 gyms over 2 states and regularly entered CrossFit and Weightlifting competitions. 
Her favorite lifts are the Snatch and the Deadlift; she has placed 2nd at the Colorado State Weightlifting Meet in the 69kg class. 
  • CrossFit Level 1
  • CrossFit Level 2
  • CrossFit Rowing
  • CrossFit Weightlifting 
  • CrossFit Anatomy
  • CrossFit Scaling
  • CPR AED 
  •  2nd Place Colorado State Weightlifting Meet - 69kg class
Jake Humphrey CrossFit 720 Denver Coach

- Olympic Lifting/Performance Coach -

Jake Humphrey

Jake, or The Big Kat as he's affectionately referred to, has been coaching Strength and Conditioning, and has been a staple of the Denver CrossFit community for more than a decade.  A former Division 1 football player and All American Rugby player for Colorado State, Jake's specialty is Strength Training, Sports Performance and Weightlifting, having been a USAW Certified Coach since 2009.

He is currently the #1 ranked 96 kilogram Senior lifter in Colorado, and the #2 ranked 96 kg Master's (35+) lifter in the country.  Jake loves to "Coach Em' Up" in all things Barbell.

  • USAW Certified Coach
  • CrossFit Level 1 Trainer
  • CrossFit Level 2 Trainer 
  • Exercise Science Degree in Progress