Bloom helped lead both his football and track teams to state championships. In his freshman year, Bloom played quarterback and defensive back. He switched to receiver in his sophomore year and played on the junior varsity football team. He accepted a full scholarship to play college football at the University of Colorado Boulder. As a track athlete, Bloom helped lead his high school track team to back-to-back Class 5A state championship titles his junior and senior year. He competed in the 100 m, 200 m, 4 × 100 m and 4x400 meter.