Personal Training & Nutrition Services

Personal Training at Timberhill Athletic Club

Personal training gives you the opportunity to exercise in a one-on-one, or in a small group environment with a fitness professional that understands your fitness goals. After assessing your needs, your trainer will design a fitness plan just for you and safely coach you through effective exercise sessions.

Whether you want to lose weight, heal an injury or compete in a sporting event, our personal trainers can help you. All of our personal trainers are experienced, educated and certified by accredited sports and fitness organizations. At Timberhill Athletic Club you’ll receive highly-qualified instruction from professionals committed to your fitness.

Complimentary and Discounted Services

Two FREE Personal Training Sessions

With your membership, you receive two free personal training sessions with a trainer. Based on your goals, our fitness staff will help you get started with proper techniques on our cardio and weight equipment.  Available for new clients only.

20% off an 8-Pack of Personal Training Sessions 

Valid within the first 30 days of your new membership.

Personal Training Services

Individual Personal Training

FREE initial consultation

30 and 60 minute Personal Training sessions available


Small Group Personal Training (2-3 Persons)

A fun way to train with your friends or significant other!

Hybrid Personal Training Services

Hybrid Personal Training

Personal Training Meets Online Training

Free Initial Consultation

Regular training sessions with your trainer for checkups while having access to your own app for individualized workouts and remote coaching.  One, three, and six month programs available.  

Nutrition Services


Nutrition Service Description
30 minute Nutrition Consultations
Review macros and food intake, suggestions and tips for healthy nutrition to meet specific goals.
Month of Nutrition Coaching via Training App Tracking, feedback, meal plan, etc.
Bundle Personal Training

Bundle package of hybrid personal training plus hybrid nutrition coaching

30 minute nutrition consultation plus nutrition tracking and coaching through training app, ie. MyFitnessPal, Fitbit, meal plans, etc.

PACK Training

Are you ready to take your fitness to the next level? We’re thrilled to announce our PACK Training sessions at Timberhill Athletic Club, designed to give you the benefits of personal training in a small group setting.

Group Size: Limited to just 6 participants per session.

What to Expect:

  • 2-3 small group training sessions a week
  • Timberhill Training App for Workout Access and Progress Tracking
  • Individualized Coaching, Group Motivation
  • Join Month-to-Month

PACK Training is not just a workout; it’s a transformation. Whether you’re looking to increase strength, muscle mass, lose weight, or just get into great shape, our experienced coaches and tailored workouts provide the perfect environment.

Sign up now and start your journey at your convenience with our rolling admissions. Each session is just $20 (less than a third the cost of personal training), and we charge monthly and prorate fees for anyone joining mid-month.

Join A PACK Today!

We can’t wait to welcome you to the Timberhill family. For more details, visit our website or contact our head trainer, JR at 




Service Description
Workout Cards
Get a written workout card from a personal trainer to get you started.
In-App Workout Program Get a month of a ready-to-go workout program from a personal trainer.
On-Demand App Programs, workouts, fitness and nutrition resources all on-demand.

JR Prieto-Romero, CSCS

Head Trainer>>

JR Prieto-Romero, CSCS

I have dedicated the last decade of my life to become the best trainer and person I could be.  I graduated from Oregon State University with a degree in Exercise and Sports Science.  I have been the head trainer and coach at G3 Sports and Fitness and a CrossFit Box for the last few years.  I have worked with a diverse population from youth athletes working on the fundaments of movement science, athletes looking to enhance their performance to the next level and prepare for college, adults looking to recondition their body from a long hiatus or build a healthy and strong foundation, and seniors looking to improve their functional capacity.  As a Certified Strength and Conditioning Specialist, I am the go-to trainer for getting bigger, stronger, and faster across the entire spectrum.   When I am not training, I am working on myself and other projects that could help me improve.  I enjoy training, reading, learning, and doing anything that challenges me physically and mentally.

Available For Training on Request

B.S. Exercise and Sport Science (B.S. EXSS)
Certified Strength and Conditioning Specialist (NSCA-CSCS)

Performance Enhancement Specialist (NASM-PES)
Certified Personal Training (NSCA-CPT)
Kinetic Integration Exercise Professional (KIEP)
CrossFit Level 1

Steve Sackmann
Fitness Director, Personal Trainer »

Director of Fitness Operations. A.C.S.M., A.C.E. certified. Personal Trainer over 20 years experience with 30 plus years in the Fitness industry. Steve specializes in cardiac, back, and shoulder rehab. He is excellent with athletic performance and event training for marathons, hiking, triathlons and skiing. He offers an annual Ski conditioning class in the fall. Steve enjoys skiing, backpacking, golf, raising his two kids and a strong cup of coffee.

Devin Shelfer

Certified Personal Trainer (NASM-CPT)

The world of physical fitness has always been an interest of mine. What started as an interest has slowly turned into an obsession as I’ve delved deeper into learning the human body. Growing up I was always involved in some sort of sport or physically exerting program, from football to lacrosse or rugby I could never get enough time testing what my body could do. Going from the world of distance running; competing as a lifeguard and a sprinter, to full time weight lifting has given me a scope of what our bodies are meant to achieve.

Learning to teach others how to step into the world of physical fitness has been the most eye opening part of my journey. Beginning the journey is always an excitingly scary process but every step taken is matched with realizations on just how powerful both your mind and body can be. From lifting your first weight to achieving your first proper pull up there is always something to be tinkered and improved upon.

Mason Morgan, B.S. Kinesiology, Oregon State University

Certified Strength & Conditioning Specialist (NSCA-CSCS)

Throughout my life I have always been around sports, whether this was playing sports in my youth or coaching sports throughout college. This love for sports led me to earn a Kinesiology Degree from Oregon State University. During my time at Oregon State, I was able to learn under fantastic instructors that led me down the path of personal training. With my degree, I was able to earn my Certified Strength and Conditioning Specialist certification and have been training since. I work with a vastly diverse population ranging from youth building a movement foundation to athletes training to enhance their performance to functional fitness for all levels. 

My goal, as a trainer, is to inspire people to become more active whether this means getting up and walking more or coming into the gym and resistance training. When I am not training, I am teaching at OSU or coaching youth basketball. I enjoy spending time and hiking with my two dogs Maki and Ollie, reading, and playing basketball. 

Accepting new clients today.

Jayna Davis, BS

Bachelors in Human Nutrition

Certified Personal Trainer

I have always lived an active lifestyle, playing all types of sports as I grew up. Many of my older family members struggled with disease and mental illness. As I got older, I learned how to use exercise and nutrition to prevent disease and help manage anxiety and depression.

I studied Human Nutrition at The Ohio State University and following my graduation I worked as a clinical nutritionist and health educator at Vanderbilt University Medical Center. I continued living an active lifestyle outside of the hospital, training small groups at a local community center. I decided I wanted to spend my life helping others prevent disease and live a healthy life through diet and exercise. I began studying for my personal training certification through the American Council on Exercise (ACE) and became a Certified Personal in October 2022.

My goal is to help you understand how to take control of your own health through small, simple changes.
When I am not helping others I enjoy experimenting with cooking, hiking, playing volleyball, walking my dog, and finding cute coffee shops.


Rebecca Reeve, PCES

Certified Personal Trainer

Certified Nutrition Coach

Pregnancy and Postpartum Corrective Exercise Specialist

I’ve always enjoyed being active and grew up playing soccer and skiing as a way to connect with my family. In high school, I competed in downhill ski racing. As an adult, I’ve found so much joy in doing step aerobics and I love the challenge of weight lifting.

I attended Portland State University and earned a degree in French before going on to complete a Postbac in Biology. I worked in a women’s health clinic for a few years before having children of my own and nurtured a passion for caring for pregnant and postpartum women. I have been teaching group fitness classes since 2018 and became a Certified Nutrition Coach and a Certified Personal Trainer in the spring of 2023, and a Pregnancy and Postpartum Corrective Exercise Specialist in January 2024. 

When I’m not at the gym, I enjoy spending time with my husband and three children and our cats and dog. Baking is my favorite hobby and I love experiencing the world through travel and food.

Olivia Holm
B.S. Kinesiology, Oregon State University 
Certified Personal Trainer
Since a young age, I have been immersed in the world of sports and fitness. From the thrill of competition to the joy of movement, every experience has contributed to my deep rooted passion for the human body and fitness. My passion motivated me to earn my Bachelors of Science in Kinesiology at Oregon State University, and after earning my certification as a NASM Personal Trainer, I proudly joined the talented team at Timberhill. As a personal trainer, I look forward to sharing my passion with my clients as I educate, motivate, and help them achieve their health and fitness goals. Through creating personalized workout plans, I look forward to partnering with clients to assist them in establishing both short term and long term goals. My goal is to build the confidence of every person I interact with by providing accountability and sharing knowledge and inspiration. My degree in Kinesiology has not only prepared me for my role as a personal trainer, but it has strengthened my passion for knowledge and confirmed my dedication to staying at the forefront of fitness, challenging myself and others to push themselves beyond what they ever thought possible to achieve their goals.

Get ready to crush your fitness goals this summer with our exclusive temporary membership promotion!

Dive into our state-of-the-art facilities and enjoy access to top-notch equipment, dynamic group classes, and personalized training sessions. Whether you're shooting hoops, perfecting your pickleball serve, or just enjoying a refreshing swim, our facilities have everything you need to stay active and have fun in the sun.

Don't miss out on this limited-time offer to sweat, smile, and succeed! Sign up today and make this summer your strongest yet.

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