The 2026 Xfinity US Gymnastics Championships — Sr Women’s Day 1 is the opening session of the senior women’s competition at the U.S. Gymnastics Championships, featuring the country’s top elite female gymnasts. The meet takes place at the Mortgage Matchup Center in downtown Phoenix and is organized by USA Gymnastics. As the premier national championship meet, it showcases top-level routines and factors into national rankings and team selection considerations.