Mammoth Mountain Motocross 2025. Motorcycles invaded mammoth mountain once again for the kickoff weekend of the 2025 mammoth motocross in mammoth lakes, california. The track has changed a little over the years, but the fun hasn’t.

7 days of thrilling races with riders competing for a coveted mammoth bear trophy. Riders have ventured to 6 qualifying locations around california during the road to mammoth race circuit and are more than ready to bring home a coveted.