1. Oceano Dunes (Pismo), California
2. Glamis, California
3. Coral Pink Dunes, Utah
4. Little Sahara Dunes, Utah
5. Killpecker Dunes, Wyoming
6. St. Anthony Dunes, Idaho
7. Silver Lake, Michigan
8. Cinder Hills, Arizona
9. Dumont Dunes, California
10. North Sand Hills, Colorado
11. Armagosa Dunes, Nevada
12. Clayton Valley, Nevada
13. Crescent Dunes, Nevada
14. Nellis Dunes, Nevada
15. Sand Mountain, Nevada
16. Winnemucca Dunes, Nevada
17. Mescalero Dunes, New Mexico
18. Little Sahara, Oklahoma (Waynoka)
19. Christmas Valley Sand Dunes, Oregon
20. Oregon Dunes National Recreation Area, Oregon
21. Sand Lake, Oregon
22. Kermit Sand Hills, Texas
23. Coral Pink Sand Dunes, Utah
24. Sand Hollow State Park, Utah
25. Moses Lake Sand Dunes, Washington
There a couple other small ones i know of in WA, just there kinda small to even list and they bundled Florence, Coos bay and Winchester bay into #20 as there all so close together...proly couple more small ones out there also and i didn't list the ones up here as you can see. But thats basically your main ridable dunes in the USA.
HAHA east coast got ripped off on dunes lol.