Crum attended Laramie High School in Wyoming. He chose to stay close to home for college, joining Wyoming over Colorado State and Utah State.
He redshirted in 2018 and saw no game action. He saw 12 games in 2019, five of them being starts. He helped Wyoming running back Xazavian Valladay to a 1,000 yard rushing season.
In 2020 through 2022, Crum started in all 31 games for Wyoming, earning an All-Mountain West Honorable Mention in 2021.
Crum returned to Wyoming in 2023 to be a veteran presence on the offensive line. He switched to left tackle this season after starting at left tackle for the previous four years. He played well in 13 games allowing just 4 sacks.