KANSAS CITY, Kan. (AP) — Bruce Jenner, former Olympic decathlon champ and reality television star, is racing this weekend at the Kansas Speedway.

Jenner is racing with his 34-year-old son Burt Jenner in the SFP Grand Prix on the road course at Kansas Speedway in Kansas City, Kan. They’re co-driving in the Lamborghini Super Trofeo class.

Jenner, now 63, won the gold medal in the decathlon in the 1976 Montreal Olympics, setting a then-world record with 8,616 points. He may be better known now, however, for the TV reality show, “Keeping up with the Kardashians,” which chronicles the life of Jenner’s extended family.

Yahoo Sports quotes Jenner saying the closest he’s ever come to passing out was not after running, but when he climbed from a hot race car.

“Actually, the closest I ever came to passing out was at Mid-Ohio one year. We didn’t have a cool suit, it was hot. The engine’s up front and an enormous amount of heat comes off that engine,” Jenner said.

“I got out of that car and I thought I wasn’t going to make it. I was just cooking. And I had to lay down. I never had to do that running.”