In 1987, a man named Red Callaway organized a 24-hour race and called it "Iron Butt.” The Oklahoma Bicycle Society sponsored the race. The course was a 14.01-mile loop around East Oklahoma City's Lake Stanley Draper. Riders claim the course to be the roughest pavement of any Ultra event ever. Many a rider cut their Ultra teeth at this event.
In 1992, Red added "Tin Butt", the 12-hour version of Iron Butt. Tin Butt, scheduled in May and Iron Butt in October, gave riders options and opportunity.
In 1997, Lanie Smith brought Tin Butt to McGregor, Texas. McGregor, is just west of Waco. Soon after that Red retired from hosting the event and Lanie Smith, began running Tin Butt and Iron Butt.
Lanie retired from Iron Butt about 1998. Dan Driscoll resurrected the Butt races in 2003 in Cleburne, Texas. The only problem was that the New Hope Baptist Church, the new host location, did not like the name "Iron Butt.” Hence, the name "The Texas Time Trials" was born.
After the 2008 event, TXDOT repaved a large portion of the Cleburne course with a very very rough/coarse chip seal. Dan found a new course with better pavement in Glen Rose, Texas. The event has been held in Glen Rose since. In 2017 Dan brought in Andrew Willis and Holland Racing out of Austin, Texas to assist with managing the event.