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Treadfit is a rapidly growing fitness brand that provides small group customized workouts from certified trainers. Each class will improve your overall fitness levels using interval training on the treadmill, coupled with full-body strength training. At Treadfit, no class is ever the same!

The Workout: Treadfit’s small group classes are the perfect combination of cardio and strength training. Under the guidance of experienced, certified instructors, clients will burn on average between 400-800 calories per class. Treadfit’s workout will increase endurance and improve fat burning – resulting in a stronger, faster, and leaner you! Everyone is welcome at Treadfit: walkers, joggers and hardcore runners. Classes are open to all adults and teens, ages 18 and older.


Single Class


5 Class Pack


Student 5 Class Pack


10 Class Pack


15 Class Pack


20 Class Pack





Essential Starter

8 classes/month




12 classes/month




16 classes/month



Basic Plus

20 classes/month




24 classes/month





Jenny, an ACE certified group instructor and nutrition specialist, is the founder of Treadfit. After completing five marathons and several half marathons, she began experimenting with shorter bursts of high intensity running mixed with strength training. She saw dramatic improvements in her fitness level, and decided to leave distance running behind. Jenny brings her love of running and fitness to the unique format of Treadfit’s workouts.


Colette is a certified ACE personal trainer with over seven years experience as a personal trainer in the Beverly area. Colette specializes in the body’s core muscles that are exercised in everyday life. She is a strong believer in helping her clients achieve their maximum fitness goals through a high energy approach to their exercise routine. Colette is an active mother of five and an amazing role model!


Dawn is an experienced certified group instructor and a Treadfit regular. Dawn is a busy mother of two who incorporates fitness into her family’s daily lives. She has been active in sports and fitness since her high school days, and brings her dedication to fitness and health to each of her classes.


Sarah Daley is a local resident of the Beverly neighborhood. Sarah and her husband, Matt, have three children who keep them busy! Sarah has been with Treadfit since it opened back in 2015, and it has been her second home since! She has been active in sports and cheerleading her entire life and has a strong passion for personal well-being and running. Sarah loves helping people feel good about themselves by reaching their full potential, both mentally and physically. She is a certified group fitness instructor through ACE, and this training helps her to be able to create workouts that maximize outcomes. Helping people feel good about themselves through exercise is her main goal. When Sarah is not at Treadfit or at home with her family, you can find her in the sky working as a Southwest Flight Attendant.


Mary is a certified ACE group fitness instructor and a Treadfit regular who completed nearly 200 classes in 2017 and won top female during March Madness. Since running track in high school, she’s completed two Chicago marathons as well as many local races. As an exercise enthusiast, Mary found her passion in learning about fitness and helping educate others. She is thrilled to join the Treadfit Team!


Melissa is an ACE certified group fitness instructor and Treadfit regular who has completed over 730 classes. Melissa has been an avid runner her entire life and has a strong passion for fitness and staying healthy. As a busy mom of three teenagers and 24 year veteran teacher in CPS, Melissa knows how to motivate people and encourage them to accomplish their goals. Melissa brings high energy and a little humor to her classes, laughing burns calories! She is honored and extremely excited to join the Treadfit team!


Clare is an ACE certified fitness instructor as well as a Doctor of Physical Therapy and Board-Certified Clinical Specialist in Orthopedic Physical Therapy. Her love of movement began at a young age as a competitive Irish dancer and soccer player. She has traveled to Ireland to compete in the World Championship and run her first marathon. Clare spends her free time with her husband, daughter, and two dogs. As a Beverly transplant, Clare has found a sense of community at Treadfit and is excited to challenge her clients each week!


Kaley’s love of fitness came after working in the corporate world for many years. She wanted to share her passion for fitness with others and became an ACE certified trainer. Kaley’s focus on fitness also helps her build endurance and stamina to keep up with her five little ones. Her focus is on perfecting form and lifting heavy to achieve amazing results.


Jade is an ACE certified group fitness instructor with a passion for all things Treadfit. Growing up with two competitive bodybuilding parents, health and fitness has always been a priority. She believes exercising is about self-love and taking care of your body, mind, and soul, not just looking your best. Along with teaching at Treadfit Jade works as an American Sign Language Interpreter for Chicago Public Schools. She strives to create an atmosphere where all can succeed regardless of their abilities. Clients love to have her positive energy in the gym!


Molly is a certified ACE group fitness instructor and Treadfit regular with over 250 classes completed! Molly fell in love with the classes when she joined after moving back south in early 2022. Growing up playing sports, Molly values the importance of staying active and moving your body in ways that are challenging yet enjoyable. Her love of Treadfit classes, desire to make a positive impact in peoples’ lives, and show that exercise is truly for everyone and every body type inspired her to get certified. When not at Treadfit, Molly works as a Marketing Manager and enjoys spending time with her loved ones including her husband and their adorable dog, Hank. She also loves cooking, reading and absorbing all things true crime. Molly is thrilled to join the Treadfit family!

Caitlin Strubin

Caitlin is an ACE certified group fitness instructor and Treadfit regular who has completed over 750 Treadfit classes. She has been on the winning team for March Madness the past two years in a row. Caitlin likes to focus on form and heavy lifts during class. As a Special Education teacher of 10 years, she is creative and excited to help clients reach their fitness goals. Caitlin lives in Beverly with her husband and two dogs.

Brittany Wiley

Brittany has dedicated the past 13 years of her personal life to the practice and education of health and fitness. Now, as an ACE Certified Group Fitness Instructor at Treadfit, Brittany leverages the knowledge she has gained to lead high-energy classes designed with efficiency and excitement in mind.
As a former athlete and mother of two who has personally experienced a major injury, she places a strong emphasis on proper form and function to prevent injuries and achieve peak performance after recovering from childbirth or injury.
Brittany is truly passionate about sharing her expertise with others and is committed to helping everyone unlock their full potential and fall in love with the process. Her ultimate goal is for you to leave her classes both sweaty and with a smile on your face!

 Caitlin Harkins 

Caitlin is an ACE certified instructor and avid runner competing at the varsity level in high school. She has completed over 300 Treadfit classes and completed the Chicago Marathon in 2022! She is thrilled to be joining the Treadfit team!

Meghan Miller

Meghan is an ACE certified group fitness instructor who has completed over 300 Treadfit classes, as well as many local runs. Since a young age, Meg has been involved in sports and fitness. After having her second child, Meg was looking for a new workout, and has been a Treadfit regular ever since! Meg knows the importance of being active, and how staying active is not only important for your physical health, but also your mental wellbeing. She cannot wait to help clients with their health and fitness goals! Outside of instructing, you’ll find Meg at an early morning Treadfit class, staying busy as a kindergarten teacher and spending time with her husband, 2 young children and their dog.

Mike Brown

Mike is an ACE certified group fitness instructor and is no stranger to Treadfit as he is a former top male for March Madness and an early morning regular. You can typically find Mike in his favorite instructor’s classes (Mary Brown, his wife), and he loves posting his workout progress on Instagram at the end of each class. Mike has participated in 4 Chicago marathons and has played hockey at Brother Rice High School, Robert Morris University, and he continues to play competitively today. Mike’s goal is to bring the teamwork and camaraderie atmosphere to class and make the workouts fun and challenging for clients to focus on continuous improvement. Outside of the gym, Mike is an HR Professional for Medline Industries.

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