The first event of the 2025 ProKart Challenge program was held on the February 28-March 2 weekend at the new K1 Circuit. The Winchester, California facility welcomed the Superkarts! USA regional program for a third time since opening its doors in August 2024. Rounds One and Two of the 2025 championship program kicked off with perfect racing weather to begin the 21st season of the series.

With rain overnight and the threat of more rain in the forecast throughout the day, RMC Winter Trophy competitors descended on the Orlando Kart Center (OKC) for the final time in 2024. With race wins, championships, and tickets to the RMC Grand Finals on the line, the wheel-to-wheel action commenced with prefinals for all classes with grids set from Friday’s qualifying session before the afternoon made way for the main events on Championship Sunday.

Wheel-to-wheel racing kicked off at the RTX Karting RMC Winter Trophy Sunday. Now a three-race series due to issues with timing and scoring on Saturday, qualifying on Friday afternoon set the grid for the prefinals on Sunday. With Prefinal A and B for classes over 36 entries, the top-18 in each prefinal transferred directly to the main event with all other class prefinals setting the grid for the finals.