2026 St. Louis Supercross – 450SX Main Event | Round 12
The 450SX Main Event at the 2026 St. Louis Supercross is the biggest race of the night at Round 12 — and at The Dome at America’s Center, the premier class delivers a main event that could prove to be one of the most important of the entire 2026 championship.
St. Louis has always been a venue that brings out the best in the 450SX field. The electric indoor atmosphere at The Dome at America’s Center, combined with a track that rewards technical precision and calculated aggression, creates the perfect environment for a championship-defining main event. With the title fight entering its final stretch, every rider on the gate knows that a strong result here can change the entire complexion of the standings.
The main event distance tests everything that the 450SX riders have built throughout the night — the gate pick earned in the heat race, the track knowledge accumulated across a full day of riding, and the physical and mental reserves needed to sustain championship-level pace from the first lap to the last. At this stage of the 2026 season, there is no room for a conservative approach. Every position is fought for hard, and every point counts.
The 2026 450SX championship has been defined by momentum shifts, surprise results, and a level of competition that has kept the title fight wide open deep into the season. St. Louis is the next chapter — and the main event at The Dome at America’s Center is where it gets written.
Hit play on the video below and watch the full 450SX Main Event from the 2026 St. Louis Supercross.
450 Main Event