: The premier class featuring the most experienced riders on 450cc four-stroke bikes.
: Two heats per class; the top finishers transfer directly to the Main Event.
: The night's finale. The 250 Class races for 15 minutes plus one lap, while the 450 Class races for 20 minutes plus one lap. The 2026 Season Overview
: The "stars of tomorrow" class, typically split into Regional divisions (East and West), featuring 250cc four-stroke bikes. Standard Night Program Structure:
The competition is divided into two primary classes based on engine displacement:
: The top 40 riders from afternoon timed sessions advance to the night program.
: A final short race for riders who didn't transfer from heats; only the top four advance to the Main.
Monster Energy Supercross is the premier stadium-based off-road motorcycle racing series, featuring top athletes competing on intricate, custom-built dirt tracks. The championship is structured into 17 rounds held across major U.S. stadiums from January to May.
