Motorcycle riders and fans, take note. Cottonwood’s Thunder Valley Rally will return to Riverfront Park on Sept. 20 and 21. Over the weekend, attendees can enjoy live music, vendors, food and drink and a bike and car show, of course. The band Vertical Horizon will headline on Friday night, and Warrant will take the stage on Saturday. A one-day pass costs $35, and a two-day pass costs $60. Visit thundervalleyrallyaz.com for more information.