February 18, 2024February 18, 2024 The Historic 30th NCBS Good Old Fashioned Bluegrass Festival Is This August The Historic 30th Good Old Fashioned Bluegrass FestivalΒ will be held August 8-11, 2024Β at the San Benito County Historical Park in Tres Pinos. The festival is a benefit for the Northern California Bluegrass Society. The San Benito County Historical Park in Tres Pinos.