Sunday morning was the 19th year for the 3M Half Marathon in Austin.
And it was very cold!
But 17-year-old Rebekah Priddy just didn't mind it.
"It's always hot during Cross Country season. Especially here in Texas, it's awful and this weather is definitely the ideal running weather," Priddy said.
"It's great for running! We will have a lot of runners who will get a personal record today. And they've got a nice tailwind pushing them south," said Jane Kovacs with 3M.
But not every runner was a big fan of the cool air.
Sammy Cheptoo was the first to finish. He says the cold prevented him from doing as well as he wanted.
Kelly Williamson is a professional triathlete who lives right here in Austin. She was the first woman to finish.
"You know it's always nice to be able to win a race in your hometown and so it's awesome. I've lived in Austin since 2006 and so definitely a pleasure to be able to win it here in Austin," Williamson said.
Williamson also says her time's been better before. But she doesn't blame the cold weather. She says last year she had a little bit more time to train.
Race organizers tell us this year was their biggest race ever with around 6,300 runners and 2 wheelchair contestants.
And the race wasn't all for fun. 3M's beneficiary, "Communities In Schools" will be getting about $40,000 from the 3M Foundation.