Education
He attended Montana State University before transferring to the University of Oklahoma. Casey attended Laurel High School (Montana), coached by head coaches James Haskins and Lisa Condon.
He attended Montana State University before transferring to the University of Oklahoma. Casey attended Laurel High School (Montana), coached by head coaches James Haskins and Lisa Condon.
He ran his first four-minute mile on February 4, 2011. High School He set the state high school mile record of 4:07:09. One of the National Collegiate Athletic Association"s top milers and 1500m runners, Casey ran a 4:04:44 mile his freshman year, which equates to 3:59.19 after National Collegiate Athletic Association"s altitude-adjustment formula because has an 4,800-foot elevation.
He ran the first four-minute mile in Montana without altitude-adjustment on February 4, 2011 at 3:59.76.
He transferred from Montana State University to the University of Oklahoma in 2012. Casey ran second in the 1500 m race at the United States of America Track & Field Championships.
In 2015, Casey holds the record for the fastest mile run at Montana State University, with a time of 3:54.59.