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About Us

We believe the quality of our health determines the quality of our lives—and nothing is more important than that. We believe fitness is about strengthening and conditioning your body and mind so you can get out there, explore the world, seek new adventures and be the person you were meant to be. 

Windy City Strength & Conditioning is a dedicated, full time strength and conditioning facility, and the home of Windy City CrossFit—the first CrossFit facility in Chicago. We use kettlebells, barbells, dumbbells, bumper plates, jump boxes, medicine balls, rowers, gymnastics rings, parallettes and pull-up bars to effectively train our athletes every day.

CrossFit in 100 Words

Eat meat and vegtables, nuts and seeds, some fruit, little starch and no sugar. Keep intake to levels that will support exercise but not body fat. Practice and train all major lifts: Deadlift, clean, squat, presses, clean and jerks, and snatch. Similarly, master the basics of gymnastics: Pull ups, dips, rope climb, push ups, sit ups, presses to handstands, pirouettes, flips, splits, and holds. Bike, run, swim, row, etc. hard and fast five to six days per week mix these elements in as many combinations and patterns as creativity will allow. Routine is the enemy. Keep workouts short and intense. Regularly learn and play new sports.

Our Coaching Staff

Our coaches are all highly trained and certified professionals with a life-long dedication to wellness, health, fitness and livin’ BIG. Experienced at managing groups, as well as working with individuals in a one-on-one setting, our staff will teach, motivate and inspire you to get (and stay) in shape.

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    Justin Marcis

    Founder & Owner

    Founder of Windy City Strength & Conditioning, Justin's goal is to inspire and lead individuals to long-term health, fitness and happiness. More

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    Esther Kim

    Operations Manager

    The community of people of all ages and fitness levels is truly what inspires Esther. More

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    Chris Landis

    Member Services

    Chris enjoys meeting new members and talking about how strength and conditioning can improve their lives. More

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    Jim Roth

    aka "Jim Live"

    Jim loves people and people love Jim. He keeps the Windy City community thriving. More

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    Taylor Perry


    Loves to help people reach their best self, and make each person’s day a little bit better than when they entered the gym. More

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    Megan Molloy


    Megan knows life can wind out of our control but believes a grounding force can be found in caring for your body physically and mentally. More

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    Paul Janse van Rensburg


    Paul loves helping athletes grow by providing the necessary tools to move effectively for longer and healthier lives. More

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    Travis Guy


    Travis believes that a healthy and fit lifestyle increases happiness and positivity in all aspects of life. More

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    Kelly Benfey


    Kelly’s favorite part of her job is assisting people back into full activity and exceeding their performance prior to injury. More

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    Mark Krueger


    Mark firmly believes EVERYBODY has and deserves the right to lead a healthy and active lifestyle! More

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    Bradley Hillhouse


    Bradley firmly believes in harnessing the greater whole of community through the shared struggle and gain of fitness. More

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    Elyza Valles

    Front Desk


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Giving Back

Murph Day

Since 2008, Windy City has hosted an annual workout in memory of Navy SEAL Lieutenant Michael Murphy, and all fallen veterans. We're proud to say that we've raised over $120,000 for the Navy SEAL Foundation.

More about Murph Day

The Sierra Club Foundation

At Windy City, we believe in getting out there, experiencing the world, seeking new and exciting challenges...and using our health and fitness to be the people we were meant to be. We also believe in giving back, paying forward and being socially responsible.

We believe so strongly in this that we’ve partnered with Merchant Giving Project so that a portion of every credit card transaction will be donated to The Sierra Club Foundation, an organization dedicated to safeguarding our planet so future generations will have an “out there” left to explore.

More about The Sierra Club Foundation

Barbells for Boobs

Windy City started hosting an annual fundraising event in 2016 helping Barbells for Boobs, a non-profit organization that strongly believes that everyone has a right to know if they're living with breast cancer. Together, we've raised over $21,000 for the organization, which involves a team workout, raffles and prizes. Join us at our next event in December and help everyone who benefits from this organization.

More about Barbells for Boobs

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