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Thunder Valley Awaits: AMA Pro Motocross Heads to Colorado for High-Altitude Showdown Under Rising Temperatures

Round 3 of the AMA Pro Motocross Championship and Round 20 of the SuperMotocross World Championship takes center stage this weekend as Thunder Valley welcomes riders and fans to one of the series' most scenic and beloved venues.

Justin Cooper to Miss Thunder Valley, Targets Return at RedBud After Injury Setback

The Yamaha star will sit out this weekend’s Colorado round, marking his first missed 450 race and first outdoor Pro Motocross absence since turning professional in 2017.

End of an impressive streak. 💔 Justin Cooper has confirmed he will miss Thunder Valley this weekend, ending a run that dates back to his professional debut in 2017. The 450 rider says recovery remains on track, with his sights firmly set on a comeback at RedBud after the break.

🏁 Chase Sexton isn’t backing down.🟢

The pace is there, the speed is there… but the starts? That’s the battle he’s still fighting. Every practice session is another step toward fixing the hole shot and sharpening that opening-moto aggression.
Because in motocross, talent alone isn’t enough—if you’re not out front early, you’re already playing catch-up. 👀🔥

Sexton knows it, and he’s putting in the work to change it.

Back to work. 💪
Aaron Plessinger and RJ Hampshire looked absolutely spent after a brutal day of training, with AP joking on social media:

“We kicked today’s ass... or at least we think so.”

The photo tells the story. Sweat-soaked, exhausted, and running on fumes, both riders appear deep in the grind as the Pro Motocross season rolls on.

Fans see the battles on race day, but it's sessions like these that lay the foundation for success when the gate drops. One thing is clear—neither rider is taking their foot off the gas. 🏁🔥

The work never stops.

Jett Lawrence and his older brother Hunter Lawrence have openly stated that they are now each other's biggest and toughest rivals on the track. 😎

🤘🏻Ken Roczen; Equally impressive is their consecutive perfect performance at the Colorado venue, where they achieved a perfect 14 moto podium finishes out of 14 total moto starts.🫡

🔥PRO MOTOCROSS 2026 TRACK_MAP🏁
ROUND 3 THUNDER VALLEY

450 | 250 CLASS
WMX

Thunder Valley Motocross Park
701 South Rooney Road
Lakewood, CO. 80401
United States

SATURDAY JUNE 13, 2026 USA
SUNDAY JUNE 14, 2026 PHP

🚨Justin Cooper Update -
🗣️“Update for everyone. I'll be missing this weekends race in Colorado. It'll be my first race missed on the 450 and first outdoor that I've not shown up to since turning pro at the end of 2017. Overall I'm feeling good, cycled this morning and my goal is to get my body healthy and return after the break at RedBud”

Go Jason, that new kid needs an awakening. You da man for it. 🤠

But looks like slow motion after watching Danger Boy on Saturday. 😭

Everyone keeps talking about the next generation, but some of these kids have never had to wrestle a bad bike in their lives. 🤷‍♂️
Guys like Anderson came from an era where you didn't complain about the setup—you adapted and rode the wheels off it.

Can he still win? Maybe not.

Can he still embarrass a few of today's stars on the right day? Absolutely. 😏

And honestly, I'd pay good money to watch Anderson, Tomac, Barcia, and Stewart line up on modern 2-strokes just to remind everyone where real bike control comes from. 🏁🔥

The old guys might not be as fast anymore... but they still know things the new generation hasn't learned yet.