
Anne MahlumFounder & CEO
In this interview, entrepreneur Ann Malum shares how she transformed a single fitness studio into Solidcore, one of the most successful boutique fitness brands in the United States. She discusses the lessons she learned from building a nonprofit, scaling a business to more than 100 locations, raising capital, leading through uncertainty, and achieving a nine-figure exit. Ann also reveals her philosophy on leadership, investing, wealth creation, and why community, discipline, and self-belief are the foundations of long-term success.
Founder Stats
- Fitness, Health & Wellness, Technology
- Started 2013
- $100K–$500K/mo
- Solo Founder team
- USA
About Anne Mahlum
Ann Malum is the founder of Solidcore, a boutique fitness company that grew from a single studio into a nationwide brand with more than 100 locations. Before entering the fitness industry, she founded Back on My Feet, a nonprofit that used running to help individuals experiencing homelessness rebuild their lives. Through a combination of community building, operational excellence, and relentless execution, Ann scaled Solidcore into a category-defining business and achieved a nine-figure exit. Today, she focuses on investing, advising entrepreneurs, and sharing lessons on business, leadership, and personal growth.
Interview
August 8, 2025
What did it feel like to make $90 million in one day?
What inspired you to build a nonprofit and help homeless people?
What did you learn about people that fascinated you from working with the homeless?
How did you manage the transition from nonprofit work to founding Solid Core?
How did you approach the first Solid Core studio?
How did you scale the community aspect of Solid Core?
What was your approach to momentum once you started scaling Solid Core?
How did you ensure quality control across multiple locations?
How did you approach hiring at Solid Core?
What did you learn about opening new markets and choosing locations?
What advice would you give to entrepreneurs thinking about an exit strategy?
How did you feel about selling Solid Core to Wix?
What do you think is the key to scaling quickly and successfully?
What was your primary tech stack at Solid Core?
What kind of person did you hire first for Solid Core?
What’s the best piece of advice you’ve received as an entrepreneur?
Table Of Questions
Video Interviews with Anne Mahlum
She Built a $100M Fitness Empire From Nothing - Solidcore Founder Anne Mahlum
Cite This Interview
Use this interview in your research, article, or academic work
Related Interviews

Allison Ellsworth
Co-founder at Poppi
In this interview, Poppi co-founder Allison Ellsworth shares the journey of building a prebiotic soda brand from a kitchen counter experiment to a 1.95 billion…

Sam Altman
Co-founder & CEO at OpenAI
In this interview, OpenAI co-founder and CEO Sam Altman discusses the shifting dynamics of startup creation, the trajectory of model scaling laws, and the geopolitical…

Jamie Dimon
Chairman & CEO at JPMorgan Chase
In this interview, JPMorgan Chase Chairman and CEO Jamie Dimon discusses navigating macroeconomic tail risks, managing corporate bureaucracy, and building long-term financial resilience. Dimon addresses…

Jensen Huang
Co-founder & CEO at NVIDIA
In this interview, NVIDIA co-founder and CEO Jensen Huang discusses the geopolitical landscape of AI, the co-existence of open-source and closed models, and the massive…

Chris Best
Co-founder & CEO at Substack
In this interview, Substack co-founder and CEO Chris Best discusses the challenge of AI slop, the premium on human attention, and Substack's new transparency tooling.…

Kiran Mazumdar-Shaw
Founder & Executive Chairperson at Biocon
In this interview, Biocon founder and executive chairperson Kiran Mazumdar-Shaw discusses the pioneering of India's biotechnology sector, from launching an enzyme startup to building a…