The 15th Annual True Value Thunder Valley National in Lakewood, CO is Round 3 of the 2019 Lucas Oil Pro Motocross Championship. Thunder Valley Motocross Park plays host once again to the fastest racers in the world on June 21ST, 2019. Be ready for a full day of pro racing beginning at 8:00 am and ending at approximately 5:30 pm. 2019 is shaping up to be one of the most competitive pro motocross seasons for both classes in quite some…