Mammoth's signature summer beer + blues festival returns July 29–August 1, 2027 for its 30th anniversary after postponing 2026 to move to Canyon Lodge. Multi-day outdoor fest with 60–80+ West Coast craft breweries, blues stages, BBQ/food, and weekend Grand Tasting. Confirm final daily hours and ticket packages on mammothbluesbrewsfest.com closer to onsale. Provisional day pattern often Thu–Fri 4–11pm; Sat 12–11pm; Sun 11am–6pm.