Dallas was born in St. George, Utah, to Brent and Kari Theobald. He is the second of five kis. Dallas grew up racing cars with his family and hanging out at the ranch. In his free time he enjoys riding four-wheelers and motorsycles and doing anything that involves motors or building things.
Dallas graduated from Dixie High School in 2006, where he was award Top Ten of 2002 and Sterling Scholar. An Eagle Scout, he served a church mission in Sao Paulo, Brazil. Dallas is happily married to the girl of his dreams and has a 1-1/2-year-old girld and a baby on the way.
He has spend the last 8 years in the performance diesel industry and is currently employed by H&S Motorsports in ST. George, Utah.
Dallas is attending Dixie Technical College to further his education and bring value to his company.