The Founder of Tough Mudder Explains How the Company Expanded Its Loyal Fan baseThe popular race company had a problem: It needed to change, without upsetting its loyal fans.

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Every entrepreneur wants a loyal fanbase. That's the dream -- a passionate group of repeat customers who will evangelize for you.

But superfans come with challenges too: They love a company exactly the way it is, and they donotwant it to change. That's not very helpful, because every business needs to change. It needs to expand, experiment and find new ways to reach new people. And when a brand has superfans, it needs to somehow do this while not alienating its greatest champions.

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Tough Mudderfounder Will Dean knows this problem well. His company, which puts on obstacle course races around the world, has attracted fans so rabid that 20,000 of them tattooed the company logo on their bodies. But at the start, those fans were all the same. "We were getting lots of men in their 20 and 30s that are already in shape," he says. "And that was great. But that isn't most people. And most businesses aspire to grow."

To set Tough Mudder up to be a successful global company, Dean would need to strike a delicate balance. Without diluting his brand's ruggedness -- the thing that initially attracted those young men -- he'd also have to attract more women, older people and less physically fit people. And yet, his first solution wasn't an obvious one. "The first thing we did was create World's Toughest Mudder," he says, "which is a 24 hour, non-stop Tough Mudder where you do as many laps as you can."

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On this episode ofProblem Solvers, we explore the surprising ways that Dean struck this balance -- creating new kinds of races, new ways for fans to engage with Tough Mudder, and even a new franchise gym, all while attracting hundreds of thousands of new racers of all kinds.

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