The men and women's Olympic Marathon Trials are Saturday, followed by the Chevron Houston Marathon on Sunday.
The best runners from all around the country are coming to Houston for a chance to get to the 2012 London Summer Olympics.
Whether it's preparations by the workers or preparations by the athletes, everyone is geared up and ready for the Olympic trials; few more so than Olympic hopeful Patrick Rizzo.
"You can never count on not being top three but at the same time, you've got be ready to get your heart broken at any moment," Rizzo said.
Houston is ready to put its best foot forward for the men and women who will represent the United States in the London Olympics. More than 300 of the country's elite runners will take to the streets of Houston on Saturday.
Ryan Hall is a race day favorite.
"I love Houston. I know the city's been excited about this for a long time," Hall said.
The competitors will actually run a loop three times along Memorial and Allen Parkway -- an ideal venue to come out and watch.
"Oh, they should be planning to come out on Saturday morning; it is a very, very spectator-friendly course," race director Brant Kotch said.
Even if you're not a runner, a variety of Olympic-related activities will be available at Discovery Green. It's a perfect setup for a weekend of marathon activities in Houston.
"The weather is going to be good, the timing is going to be perfect for the London Olympics," Kotch said.
The Olympic Marathon Trials start 8am Saturday, while the Chevron Houston Marathon begins at Sunday at 7am.