Like many county roads in the state of Florida, it was originally a state highway that was downgraded to a county road during the great renumbering of 1980. CR 575 begins at the intersection of CR 41 (formerly SR 41) and CR 41 Alt. near Blanton, as Trilby Road and winds through rural northeastern Pasco County, first in a north–south direction, then in a more east–west direction. Entering Trilby itself, it crosses the Withlacoochee State Trail, then intersects with US 98 at a blinker-light intersection. At the intersection of US 301 at Trilacoochee it regains the state highway status it held long ago.