Introducing the 720 Athletics team

Meet the fitness experts that are here to help you achieve your goals


Our coaches

Ryan Young

Head Coach/Manager

Ryan started his CrossFit journey in 2015 after he finished his collegiate tennis career. He was instantly hooked after the first workout and never looked back. Ryan began coaching a few months later and has been involved with CrossFit ever since. He served as the head coach of his local gym in Mississippi before moving to Denver with his wife in 2020. Ryan obtained his Bachelor’s degree in Exercise Science at Mississippi State University. He then went on to get his Master’s degree in Exercise Physiology while interning as a strength and conditioning coach for the Olympic sports program at Mississippi State. He always knew he wanted to pursue a career in coaching. He has coached at several gyms in the Denver area but fell in love with the community at 720 Athletics. CrossFit Level 2 Certified

Griffing Zigrang coach at 720 Athletics

Griffin Zigrang

CrossFit Coach

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, she found her place at 720 Athletics. 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 2 Certified

Kathleen Sigg coach at 720 Athletics

Kathleen Sigg

CrossFit Coach

Kathleen found CrossFit in 2016 after tiring of self-directed globo gym lifting. Since then, she never looked back and fell in love with the community support and empowerment CrossFit gave her. She began her coaching career in Pittsburgh in 2019 after recognizing the joy she felt in seeing others get better and succeed. In 2021 she moved to Colorado and was delighted to have the opportunity to continue sharing her passion for fitness with the 720 Athletics community as a coach. She has a particular affinity for learning and teaching the techniques of the Olympic Lifts.” CrossFit Level 1 Certified

Savannah coach at 720 Athletics

Savannah (Sav) Fearns

CrossFit Coach

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 necessary. 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 iron therapy’s liberating effect 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 newfound health. Since then, she has coached at five gyms over two states and regularly entered CrossFit and Weightlifting competitions. CrossFit Level 2 Certified

Jan Denny coach at 720 Athletics

Jan Denny

Owner & CrossFit Coach

Jan has been an athlete all his life, starting when he was about eight years old with swimming. He was born and raised in Slovenia and always dreamed of moving to the United States to study and swim. He got his opportunity and moved to San Francisco to study hospitality in 2013. While studying and working as a manager at the Hyatt, CrossFit was his favorite part of the day. He found CrossFit as an athlete and trained at San Francisco CrossFit for three years. He always tried helping other members in class which coaches noted, and he was offered an internship at that gym. After coaching in San Francisco, he moved to Denver in 2018. Here in this beautiful city, he has coached in a couple of local gyms while always wanting to own his gym. CrossFit Level 2 Certified

Ari Hurst

Ari discovered CrossFit in 2011 while juggling her career as a D1 cheerleader at the University of Houston. What drew her in was the camaraderie and community as much as the workouts that challenged her both physically and mentally. It quickly strengthened her definition of health and greatly influenced the trajectory of her career as she later went to work for Reebok and now CrossFit HQ. Ari’s passion for marketing and fitness has given her the opportunity to live in Houston, NYC and Boston before landing in Denver where she is a L2 trainer with the 720 Athletics family.

Lauren Gill

Lauren first discover CrossFit in 2015 after walking by her local gym every day to and from work in NYC. It took only one class and she was hooked on the challenge the workouts and the community. After playing soccer for 15+ years, she missed the camaraderie as well as the competitive side to sport but found it again within CrossFit. A year into CrossFit, Lauren pursued the path of coaching; she believes in supporting athletes to be the best versions of themselves and pushing them to “that dark place” during workouts. she Since receiving her CF-L1 and CF-L2 Lauren has coached in NYC, Philadelphia and now currently in Denver at 720.

Summer Henderson

Summer found CrossFit back in May of 2016 while she was coaching group fitness classes at the CSU recreation center. Many people had told her she would like it, and she always thought it was way too badass for her, but she still decided to try out a local box nearby. It didn’t take long for her to realize how much she loved it and how it is for all fitness levels. After being a CrossFit athlete in Fort Collins for 2 years, the head coach pulled her aside and asked her to take on a coaching position and get her coaching certification. She jumped at the opportunity and found it way more rewarding to coach others through their personal health journey while still working on her own. She moved from Fort Collins to South Carolina and continued her coaching passion there for a year until she returned to Colorado and set up a base in Denver. During her 4 years of coaching Crossfit, she has worked at 5 gyms within 3 different cities but calls 720 Athletics home. CrossFit Level 1 Certified.

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