WinterWonderGrass Steamboat brings together bluegrass, folk, americana, rock, and country music in Steamboat Springs, Colorado from February 28 to March 1, 2026. The festival features headliners The Devil Makes Three, Leftover Salmon, and The Infamous Stringdusters, alongside notable acts including Elephant Revival, Sierra Hull, and Daniel Donato's Cosmic Country. With 28 total artists performing across multiple genres, this winter music festival offers a diverse lineup combining traditional bluegrass with contemporary americana and rock influences. The event showcases primarily American artists with select international performers from the United Kingdom.

WinterWonderGrass Steamboat is a two-day standalone music festival.