The Bloomgrass Festival brings authentic country and bluegrass music to Longmont, Colorado on May 9-10, 2026, headlined by The Travelin' McCourys alongside notable acts like Bronwyn Keith-Hynes and Jake Leg. This two-day bluegrass festival showcases 11 artists including regional favorites like Bouldergrass, High Road Home, and the Monica Labonte Trio. Additional performers include Bear Hat, Mighty Holler, Tonewood String Band, The Skinny, and Phills in the Highground, creating a comprehensive lineup for country and bluegrass enthusiasts. The festival focuses exclusively on American roots music with all featured artists hailing from the United States.