Sex as a $600-an-hour escort is even better than winning a race, raves ex-Olympian Suzy Favor Hamilton.

“This is better than competing in the Olympics,” the track star-turned-Vegas hooker gushes in “Fast Girl: A Life Spent Running from Madness.”

Hamilton had been exposed as a high-priced call girl back in 2012, and had immediately sworn off the lifestyle in a rambling online apology that blamed chronic depression but revealed nothing salacious.

In her new book, though, she revels in her former hidden life, and dishes in detail.

“It had been my first appointment with this handsome client, but I’d walked in and given him a kiss straight away, letting my mouth linger on his,” she recalls in one excerpt from the book, posted online Wednesday by Sports Illustrated, describing her assignation with an unnamed corporate CEO in a “luxurious penthouse suite.”

“I’d taken him to the bed, showing him that I was the one in charge,” she says of her kinky corporate takeover.

“He’d liked it,” she says of the merger.

The 47-year-old mom reveals she was drawn to the world’s oldest profession after giving her husband, Mark Hamilton, an unusual 20th wedding anniversary gift.

They went to Vegas, and hired an escort — a hooker named “Pearl” who pleasured both of them.

“Pearl had flipped a switch inside me, awakening a certainty that I could please clients even more than she’d pleased me,” she writes.

Bizarrely, her husband knew of, and grudgingly allowed, her new job as “Kelly” the call girl.

“I said I had to do this if I was going to be happy,” she writes.

“Somehow he agreed.”

Before long, she was booking “dates” whenever she traveled with her husband to Vegas for promotional events.

“I didn’t want to go back to my old life,” she writes. “Not ever.”​