303 Day, the annual event presented by 93.3 Colorado Alternative, will once again feature Colorado’s beloved 3OH!3 as their headliner. The event is set to take place on March 3, 2026, at Boulder Theater in Boulder, CO. Joining 3OH!3 on stage will be a special guest that has yet to be announced. Tickets are on sale now and can be purchased here. 

Regarding 303 Day, the band shared: “Every year on 303 Day, we get to bring our love for our hometown full circle. In 2026, we’re returning to the heart of our grassroots upbringing—playing the Boulder Theater. We used to wait outside this venue just to get front row for our favorite touring acts. Now we get to be on that stage. But we still want to bring the party like the basements we used to rock on the Hill. We can’t wait to come home and do Boulder proud.”

It was an exciting year for fans of 3OH!3 with the release of two new singles, “SLUSHIE” and “HIT ME HARDER,” their first new music since 2021, a U.S. tour with bands Simple Plan, Bowling For Soup, and LØLØ, and performances at all three dates of Vans Warped Tour. 2025 also marked the 15 year anniversary of the release of Streets of Gold, which the band celebrated with a sold out show at the House of Blues in Anaheim. The band is set to continue the celebration at with a second sold out show Brooklyn Bowl in Brooklyn, NY, on January 2nd, featuring Millionaires as support. 3OH!3 is also set to appear on the Welcome to Rockville lineup on May 9 in Daytona Beach, FL, and at the Sauble Beach Party in Hepworth, Canada, on September 5.

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