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Mike StrangeMike Strange (Owner) 

Mike grew up in Seattle and graduated from the University of Washington. He worked for the US Forest Service as a Forester for 25 years in Washington and Oregon. After retiring in 1993 Mike bought a small gym in McMinnville, Or. Three years later he closed that gym and reopened in a new location as a Gold’s Gym. Three years later he opened a second Gold’s Gym in another town, before selling out in 2004. Mike moved to Sierra Vista in 2005 and established Summit Fitness.

Janet Strange (Account Manager and Kids Room Manager) 

Janet Strange 2Janet met Mike at the University of Washington in 1965, where she later graduated with a BS in Nursing. Working as a nurse in many positions, she spent the last 20 years as a nursing supervisor. Now retired, Janet has been helping Mike since they bought their first gym in 1993. Janet is the Bookkeeper and manages all members accounts. She also volunteers at Ramsey Canyon.

Tony RiveraTony Rivera (Sales and Facility Manager)

Tony graduated from San Diego State with a BS degree in Kinisiology with emphasis in Fitness, Nutrition, and Health. He holds personal training certificates from NSCA and ACE and has worked many years in the fitness field in California and Arizona. Tony also has considerable experience in automobile sales. Tony has been with Summit Fitness since 2006. Tony and wife Martha have 2 children.


Vannessa Schlaegel (Group Fitness Manager) 

1654Vanessa spent most of her childhood in Sierra Vista, but did move away long enough to meet Chuck, marry Chuck, and then have the Army move them back to Sierra Vista in 1995. Vanessa started at Summit Fitness as a member in 2007, and finally found her calling as a Group Fitness Instructor in 2011. She has been GFM since 2012. She is excited about helping people discover new ways to enjoy exercise and make it a lifestyle for the whole family. Currently certified in Group Kick, Group Step, and Group Power, she plans to learn more so she can help our GX program improve. Vanessa and Chuck have 5 beautiful daughters and 4 grand children.


Jen EddyJennifer Eddy has over 18 years experience is the fitness industry. She earned a BS in Physical Education and Sports Science from IU of Pennsylvania in 2000 and a Master's Degree in Elementary Education in 2004. Jennifer also earned a Certified Personal Trainer Certificate from ACE

After years of of working as a PE Teacher, Personal trainer and Group Fitness Instructor, Jennifer went on to earn her CrossFit Level 1 Trainer Certificate in 2012. In 2013 Jennifer opened up her own CrossFit studio in Moss Bluff, Louisiana and owned it for over 4 years. Jennifer has her CrossFit: Level 1, 2, Kids, Weightlifting, Kettlebell, Gymnastics, and Mobility.

Having worked with elementary students, high-school athletes to older adults, Jennifer believes that having the overall wellness education is the key ingredient to a healthy and happy lifestyle. As a wife and a mother of two children, she understands the importance of balancing work, family, and staying physically active. Jennifer is excited about sharing her knowledge and experiences with a new population and helping to educate and inform these individuals of how to achieve a healthier way of living.



Heidi Reeves is a certified personal trainer with the American College of Sports Medicine since 2009. She also became a massage therapist in 2005. Heidi has taken several college level science courses including anatomy and physiology in pursuit of a nutrition degree. Heidi has always had an interest in athleticism and fitness, being a gymnast and tennis player in the past. As an avid weightlifter and circuit trainer, Heidi enjoys educating others on the numerous health benefits of strength and cardiovascular training, functional movement and flexibility, as well as a nutritious diet to encourage maximum results for efforts expanded. She has experience with a wide variety of training techniques and individuals from weight loss or bulking to improved balance and/or range of motion. She is able to tailor an exercise program to fit the goals and abilities of various participants. 


David Gunckel (Personal Trainer)David G

David believes that physical fitness can be improved upon at any stage of life. As a personal trainer certified by the National Academy of Sports Medicine, David is eager to help people of all ages and abilities, improve strength, flexibility, core, and cardiovascular fitness so that life can be enjoyed to the fullest.  David is former competitive bodybuilder, winning first place in the Copper Classic open middleweight and master’s categories in 2004 and 2005. David served as Director of Library Services for the City of Sierra Vista for over 27 years. He holds a B.A. in Elementary Education and Masters of Library Science degrees from the University of Arizona.

Shelbi  Strube (Personal Trainer)

Shelbi StrubeShelbi Strube graduated from Taylor University with a BA degree in Exercise Science. She is certified as an Exercise Physiology Specialist and plans to continue her studies specializing in Strength and Conditioning and Nutrition. Shelbi has done personal training in the past during internships and on her own time, including soccer specific training. For personal training, Shelbi specializes in HIIT. Shelbi also played collegiate soccer for four years and specializes in footwork and cognitive awareness.

For more information about us, or to
speak with any of our team members,
please contact 520-459-3668

    • Location

      934 E Fry Blvd,  Sierra Vista, Arizona, 
      Phone: +1 520-459-3668

      Hours of Operation
      Monday to Friday 5am – 10 pm
      Saturday 8am – 8 pm
      Sunday 8am – 6 pm

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