Hi, I’m Marilyn Sullivan Gross, founder of Haven Fitness Club.

For a long time, I thought fitness was about changing the way I looked. During college, I developed an eating disorder, and what should have been something healthy became rooted in guilt, pressure, and never feeling like I was enough.

Over time, strength training changed that. It taught me to focus on what my body could do instead of how it looked. Through seasons of recovery, anxiety, and personal growth, fitness became one of the tools God used to help me heal from the inside out.

That’s why I created Haven.

I wanted to build the kind of women’s gym I wish I had found years ago, a place where women feel safe, supported, and encouraged to become stronger both mentally and physically.

Whether you’re taking your very first step or you’ve been lifting for years, I’m honored you’re here.

Welcome to Haven.

meet Marilyn

MARILYN SULLIVAN GROSS

join the club

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redefining women's fitness

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a refuge for real strength

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join the club ✦ redefining women's fitness ✦ a refuge for real strength ✦

the heart behind haven

Haven Fitness Club was born from a simple belief: fitness should add to your life, not take away from it.

As a women-only space, my hope is that Haven feels like a breath of fresh air. A place where you can put your headphones in and focus on yourself, or find encouragement from the women around you. A place where strength is celebrated in all its forms.

Because strength isn’t just what you lift.

Sometimes strength is walking through the door for the first time.

Sometimes it’s showing up on a hard day.

Sometimes it’s learning to see yourself with a little more grace than you did yesterday.

That’s the heart behind Haven.

A refuge for real strength.

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Frequently Asked Questions

  • Yes!

    Haven Fitness Club is a private, women-only fitness club created to provide a welcoming, supportive environment where women of all ages and fitness levels can build strength, confidence, and community. Our mission is to create a space where every woman feels comfortable walking through the door and empowered to become the strongest version of herself.

  • Yes! We know that every woman has a different schedule, which is why Haven Fitness Club offers 24/7 access for members. Whether you’re an early riser, squeezing in a workout after work, or prefer late-night training, your gym is ready whenever you are. Simply use the GymMaster app or your optional key fob to unlock the doors and enjoy the club on your own time.

  • Joining Haven is simple!

    Visit our Memberships page and click Sign Up Now to create your account, choose your membership, and complete enrollment online.

    You’ll receive everything you need to get started before your first visit.

  • Once your membership is active, download the GymMaster app, select Haven Fitness Club, and log into your account.

    Your smartphone becomes your key using secure Bluetooth access—just make sure Bluetooth is turned on when you arrive.

    Prefer a key fob? No problem! Key fobs are available for a small fee. Simply email us at havenfitnessclub@outlook.com if you’d like to purchase one.

  • Absolutely!

    You may upgrade your membership at any time.

    If you’d like to switch from our Ultimate Membership to our Essential Membership, you may do so after 6 months. Membership changes do not restart your original 12-month commitment.

    Our goal is to help you choose the membership that best fits your season of life.

  • Yes!

    Members receive complimentary guest passes throughout the year so they can share the Haven experience with friends and family.

    Guest pass details will be available before opening day.

  • While Haven does not offer shower facilities, we do have private changing rooms where you can comfortably prepare before or freshen up after your workout.

  • Yes. Haven intentionally limits memberships to preserve the welcoming, uncrowded experience that makes our community unique.

    Our Essential Membership is available until overall club capacity is reached, while our Ultimate Membership is much more limited to keep small group training personal and ensure every member has the opportunity to reserve classes.

    Once a membership reaches capacity, interested members will have the option to join a waitlist.