Alice Watson, 3, gets comfortable on her father, Jonathan, Watson as they watched the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Thousands of runners flood the street during the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Michael Thelen of Houston dressed as Spiderman as he participated in the costume contest before the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Thousands gathered to watch the 2013 Downtown Rodeo Parade along Walker Street Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

A rodeo clown walks down Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

The University of Houston Cougar Marching Band performed during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Houston Livestock Show and Rodeo committee members ride down Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

A group dressed as characters from the Wizard of Oz participated in the costume contest before the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Texas A&M coach and former UH field boss Kevin Sumlin greets the parade goers on Saturday at the parade to kick off the Houston Livestock Show and Rodeo.

Runners line up for the annual rodeo race sponsored by ConocoPhillips. Many took part in a three-mile fun walk.

Thousands of runners flood the street during the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

A group of people participate in the costume contest before the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Thousands of runners flood the street during the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Thousands of runners flood the street during the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Crystal Stolte led a group of 17 Houston Livestock Show and Rodeo rabbit committee members in the costume contest before the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Houston Livestock Show and Rodeo committee members ride down Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Houston Livestock Show and Rodeo committee members ride down Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Mayor Annise Parker helps kick off the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

A group dressed as characters from the Wizard of Oz participated in the costume contest before the 26th annual ConocoPhillips Rodeo Run 5k and 10k that started on Walker Street downtown as part of the Houston Livestock Show and Rodeo festivities Friday, Feb. 22, 2013, in Houston. The Rodeo Run raises scholarship funds for Texas youth. Since 1988, ConocoPhillips has donated all Rodeo Run entry fees to the HLSR Educational Fund, totaling $3.3 million to date. Last year, a record 15,000 participants took part in the Rodeo Run, generating a record $400,000 for college scholarships. Photo: Johnny Hanson, Houston Chronicle

Thousands gathered to watch the 2013 Downtown Rodeo Parade along Walker Street Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Aydan Gallegos, 3, of Houston gets a good look at the 2013 Downtown Rodeo Parade while on his father's shoulders Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

A rodeo clown gives high-fives to parade attendees on Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Trail riders ride down Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Trail riders ride down Walker Street during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Thousands gathered to watch the 2013 Downtown Rodeo Parade along Walker Street Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

Thousands gathered to watch the 2013 Downtown Rodeo Parade along Walker Street Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

The Texas A&M Parsons Mounted Cavalry clean up their mess as they followed their horses during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle

The Texas A&M Parsons Mounted Cavalry clean up their mess as they followed their horses during the 2013 Downtown Rodeo Parade Saturday, Feb. 23, 2013, in Houston. Photo: Johnny Hanson, Houston Chronicle