Jeff Bezos is heading to space, but he's not the only mogul obsessed with extreme experiences. Here are the wildest ways the world's elite spend their free time.

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• A passion for extreme experiences seems to be common among the world's billionaires.
• Jeff Bezos is going to space, Larry Ellison races yachts, and Richard Branson kitesurfs.
• Jack Dorsey once did a 10-day silent meditation and only eats seven meals per week.

In just a few short weeks, Jeff Bezos will take the riskiest flight of his life, one that takes him 62 miles above Earth, right to the edge of space.

The soon-to-be-ex-Amazon CEO is something of an adventurer, what with his trips out to sea or to the bottom of caves. But that doesn't exactly make him unique among his peers - in fact, a passion for extreme experiences seems to be a common trait among the world's billionaires.

Read more: These 4 companies are leading the charge in 'space vacations' - from giant balloon flights to orbital hotels

And Bezos isn't even the only executive with a passion for space travel. Elon Musk, Richard Branson, Paul Allen, and Sergey Brin have all expressed an interest in leaving planet Earth.

But while outer space appears to be the dominant source of fascination for the world's most powerful people, there are plenty of other billionaires with extreme pursuits of their own.