Five hundred people signed up for early registration Saturday at the H-E-B on Bunker Hill in west Houston.
The 10-K race and 5-K fun run will take place on February 25.
It's not all hard work. There's also a party, costume contests and live music for the run's 25th anniversary.
Those who didn't register Saturday can register online at www.conocophillipsrodeorun.com for $30. You can also register at the event.
About 15,000 people are expected to participate.
The Rodeo Run has raised nearly $3 million for the rodeo's scholarship fund.