Our Team

Iron Horse Athletic Club


All independent contractors at Iron Horse Athletic Club are certified and qualified.
Read below to see which trainer best fits your needs.

June Jessop

June Jessop

Owner/Manager, Certified Personal Trainer

Strength training for all ages, Sports Nutrition Certified

Due to management/ownership responsibilities might not be available for new clients, but please inquire.

 Iron Horse Athletic Club

Julie Waibel

Julie Waibel RD, LDN

Registered and Licensed Dietitian

Julie Waibel received her Bachelors of Science in Nutrition Sciences degree from the University of Nevada, Las Vegas. She completed her Dietetic Internship at UNLV and became a Registered Dietitian Nutritionist (RDN) in 2012. She has provided Medical Nutrition Therapy and nutrition education in hospitals, outpatient clinics, virtually, and at Iron Horse Athletic Club. She has a clinical background with experience in weight management, diabetes, cardiovascular health, kidney disease, GI disorders, and establishing a healthy relationship with food. Julie is a foodie and believes success comes from forming a positive relationship with food, and developing a personalized and sustainable nutrition plan.

Julie enjoys educating and empowering clients who are ready to make improvements to their health and/or performance with nutrition. Consults range from 30min-60min. Most clients see changes with at least 3 sessions, as we are forming new habits, identifying challenges, and overcoming barriers to set you up for long-term success.

Iron Horse Athletic Club Members receive 15% off consults.

 Explore Nutrition RD

Teddy Koburi

Teddy Koburi

ISSA Certified Personal Trainer

Teddy was born and raised in the Bitterroot Valley. She discovered her passion for fitness after taking a desk job at the Iron Horse Athletic Club at 17 years old.

In 2015, Teddy started taking clients as a personal trainer at the Iron Horse. During her early years as a trainer she found herself exploring the world of competitive body building. Unfortunately, this lifestyle skewed her outlook on the fitness industry, causing her to step away from her career as a personal trainer.

Years later, Teddy rediscovered her love for fitness. In 2021, she was re-certified as a personal trainer; this time with a much healthier and sustainable approach to health and fitness.

Teddy’s goal as a trainer is to teach a functional and effective way to implement health and fitness into your everyday life. She wants you to experience the many benefits of strength training, build confidence, and reach aesthetic goals while maintaining a healthy mindset.

Teddy specializes in barbell training, strength and physique, as well as, general health and fitness. She offers one on one sessions and small group training for all Ages.


Justen Zimmerman

Justen Zimmerman

Certified Personal Trainer & Fitness Instructor

Take your broken wings and learn to fly…..and make it fun!
Exercise therapist; Justen Zimmerman CPT- IFA, ISSA, Kinesiology tape certified specialist, Senior fitness certified, H20 therapy and exercises certified, Sports nutrition for fitness fueling certified, group or personal fitness coach
I specialize in multi-level rehabilitation fitness, beginner fitness and weight loss! With over 20 years of experience, you can expect personal and professional consideration, delivered with independent programming for your personal and specific needs.

After the physical therapy, you may find you need guidance among the multitude of fitness styles and equipment choices, not to mention the complex world of form and accuracy for the results you’re looking for! I can help navigate this confusing landscape with my knowledge;
surgical repair rehab, prosthetics and replaced joint/limbs, disease recovery, heart and lung issues, fibromyalgia, arthritis, accident and incident recovery, pre and postnatal recovery, including Diastasis Recti, and so much more!

Fight the fluff, successful programs for weight loss, including: training, personalized food guides and continued, personal support.

Beginning is one of the hardest things to do! I can help with simple terminology, technique and suitable programs to ensure you feel more confident in the gym and your skin!

NICE TAPE JOB! I am a certified Kinesiology Tape specialist- fitness’s fix for those who are experiencing pain or inflammation. This technique is used throughout the fitness and medical world to assist in effective healing of some gym and functional fitness injures for temporary relief.


Katie Collen

Katie Collen

Certified Personal Trainer

I am an ISSA certified personal trainer and have worked at the Iron Horse for six years. I played Division 1 collegiate rugby and have always enjoyed being an athlete. I specialize in general weight training, youth sports training, small group training, and competitive powerlifting for beginners. My training style is free of judgement; I am always impressed with people who strive to be strong and appreciate their bodies at whatever stage they are in. My goal is to instill a love for strength training and all it offers, in each person that I work with.


Heidi Kaminski

Heidi Kaminski, MS

Certified Personal Trainer & Pilates Instructor

I have Masters degrees in Exercise Physiology and Nutrition, as well as an NASM personal trainer certification, NASM certified nutrition specialist, and NASM corrective exercise specialist. I am also a Peak Pilates certified Pilates instructor. My love for all things active reflects in my training style. I specialize in functional fitness using full body strengthening movements to achieve correct alignment, injury prevention, core strength, balance, and flexibility. Get strong in the gym to be strong in everyday life and activities!

Exercise Physiologist
Certified Personal Trainer
Certified Pilates Instructor



Heidi Kaminski


Dedicates her life to identifying and building the potential in others. A competitive long distance runner for 50+ years, an avid biker, skier, hiker and fly fisherman Diane’s love of yoga developed in college and has helped her recover after several skiing and biking accidents. Through her practice of yoga she was able to recover from her injury and surgeries by developing strength, flexibility and balance. Diane received her yoga teacher training through Yoga Motion in 2015 she graduated with 260 hours. In 2018 she completed her 40 hour Yin Yoga certification. She is eager to share her knowledge and love of Yoga with all ages and abilities. Diane’s yoga classes will focus on building strength, flexibility, balance and lean muscle. She can also offer children’s yoga workshops and private or small group yoga instruction/retreats upon request. Diane has 2 grown children and 6 incredible Grandchildren that give her the inspiration to LIVE her practice of yoga as a path to stay healthy and young at heart.

Heidi Kaminski


In 2016 I started taking classes at a studio in Arkansas, quickly fell in love with spin and became a regular front row member! I was then trained in studio to become an instructor!

I like to describe my style of spin class as a dance party on a bike to nowhere! We have fun music with a great beat! It’s a full body workout with arms, abs and of course legs. I love cardio so the more sprints and jumps the better!

 I brought my style of teaching to the IHAC in 2019 when my husband and I moved here! Join me early mornings at 6am Tuesday and Thursday. Also Saturday mornings at 7:30am starting October 1st.

Movement is medicine, so just get on the bike and move!!!!

Heidi Kaminski


A graduate of Darby High School, I have lived in the Bitterroot valley off and on since 1977.  I most recently moved to Conner 10 years ago from Portland, OR where I worked as a personal trainer and cycle coach to a triathlete team.  With over 30 years in the fitness industry, I bring decades of experience working with groups of individuals who have varying goals, levels of experience, and skills. My expertise shines through in my ability to create a personalized experience in each class by offering options for each individual’s needs.  My training style is “functional fitness” which seeks to improve people’s daily lives and prevent injury.

I am the former owner of Wendy Davis Training and Main Street Yoga in Darby which closed last year providing me the opportunity to teach evening Yoga and Spin classes at IHAC.

Karin Melnarik


Karin Melnarik has 25 years of experience teaching fitness classes. She currently has certifications for indoor cycling (spin) and Silver Sneakers. Karin was previously a Jazzercise franchise owner/instructor and a step aerobics teacher. She has been teaching fitness classes in Hamilton, MT since 1997, and has been teaching at the Iron Horse since 2007.

Karin Melnarik

Ashley Gehre

Ashley recently moved back to her home state to share her love of barre! She started attending barre classes over 15 years ago and instantly fell in love! The ballet inspiration brought her back to her dance days and the added fitness intensity made it the perfect workout. In the past few years, she has done extensive training with several different barre practices, so she can bring her love of barre to you. Meet Ashley at the barre and get ready to embrace the shake, honor your unique body and have fun in every class!