KGRE-FM is a commercial radio station located in Estes Park, Colorado, broadcasting to the Ft. Collins, Colorado area on 102.1 FM. KGRE-FM airs a Regional Mexican music format branded as El Tigre, simulcasting KGRE 1450 AM Greeley, Colorado.Prior to targeting the Estes Park market, 102.1 made several failed attempts to serve the Denver metro area.