Horton was a member of the 2006 World Championships Team. He's the son of Al, an engineer, and Margo, a realtor. He has an older sister named Margo, who is a dance instructor. Prior to Oklahoma, he competed for Cypress Academy in Houston under coach Tom Meadows. In the future, Horton would like to open a gym, become a stuntman or work for USA Gymnastics. His gymnastics goal is to compete for the United States in the Olympic Games and bring home a gold medal. Horton is a big football fan and lists Oklahoma as his favorite team and the Tennessee Titans' Vince Young as his favorite athlete. Horton has a two-year-old Pomeranian named Harley.