The Tulsa Federal Credit Union Tulsa Run is happening on Saturday.
This is the 41st year for the event.
More than 7,000 runners from 36 states and some from Canada are taking on the Tulsa Run. The new course runs through 12 different districts, including Blue Dome, East Village, Pearl District, Cherry Street, and Utica Square.
"It's my first run! It's really cool. Really good people. Really, really, really amazing, that race," said Rolando Huruado.
For this year’s races, runners had requested a less hilly course, so organizers switched up the route to have 100 fewer feet of elevation changes and show off the city's scenery.
"East Village, Pearl District, a lot of the areas. So you get kind of the new and up and coming. You get to Terwilliger Heights and Maple Ridge, that really are traditional neighborhoods," said Director Heath Aucoin.
Another change this year saw runners going through Woodward Park, instead of just going around it.
"You know one thing that has not changed is the crowds and the support. And I have a big family and they've always been there to support me," said runner Lana Wilson.
Wilson is one of 13 athletes who has participated in the Tulsa Run every year since the first one in 1978 and she doesn't plan to stop anytime soon.
"Hope I can do it a few more years," said Wilson.
This year, the run raised $40,000, which will be donated to charities and schools in Tulsa.
You can see a schedule of the race day events here.