Lakewood, CO

Thunder Valley Motocross Park

Promoter David Clabaugh couldn't have known how appropriate his track's name would become. He knew the nearby NHRA drag strip, Bandimere Speedway, was affectionately known as  Thunder Mountain, and recognized that Thunder Valley was a fitting complement for this stretch of world-renowned racing venues. However, within a few short years of the founding of his motocross track, four-strokes took over the sport completely. Now, the deep grumble of these big, powerful motorcycles reverberates off the mountainside with the sound of thunder every time the gate drops at the facility.