Spencer Larsen was born and raised in Arizona where he began his football career in high school. While playing for his high school team, he received numerous awards including All Region Co-Defensive Most Valuable Player.
He started his college career playing for Arizona State in which he received many honors for his exemplary work on the field. In 2003-2004, Spencer took time away from football to serve a two year mission to Chile.
His professional football career in the NFL took him to play for the Denver Broncos, New England Patriots and the Tampa Bay Buccaneers. In 2008, Spencer became the first NFL player since 2003, and only the fourth since 1990, to start a game on both offense (playing fullback) and defense (as linebacker), joining the ranks of distinguished players like Troy Brown, Deion Sanders, Juliane Edelman and Champ Bailey. Spencer now resides in Billings with his wife and children.