 Boise is 300 highway miles (480 km) south of Moscow, and many UI students are from the Treasure Valley (greater Boise area), the major population area of the state.Idaho had a major in-state rivalry with Boise State since 1971; BSU joined the Big Sky in 1970 but the football teams did not meet that season.BSU moved up (& UI moved down) to Division I-AA in 1978, then both opted up to Division I-A in 1996, joining the Big West.