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.
marilyn sullivan
meet Marilyn
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 ✦
about haven
Haven Fitness Club was born from a simple belief: fitness should add to your life, not take away from it.
Somewhere along the way, fitness became tied to shrinking ourselves, fixing ourselves, and constantly chasing the next version of who we’re supposed to be. Haven was created to be different.
Here, fitness has no age, no size, and no limitation.
There are no before-and-after expectations. No perfect starting point. No requirement to look a certain way before you walk through the door.
Just women showing up for themselves.
Women learning to be stronger. Women rebuilding confidence. Women finding community. Women cheering for each other instead of competing with each other.
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.
Frequently Asked Questions
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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 throughout her fitness journey.
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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.
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Our small group training sessions are intentionally limited to fewer than 10 participants, allowing your trainer to provide more individualized instruction, hands-on coaching, and personalized feedback than a traditional fitness class. It’s the perfect balance of expert guidance, accountability, and community while still receiving the attention you deserve.
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We’re hard at work preparing Haven for opening day! Follow us on social media to watch the renovation, behind-the-scenes updates, and announcements as we get closer to welcoming our founding club members.