Runners in red and white and roller derby players with horns and plastic bats participate in the costumed tribute to Spain's encierro. The post-run party features music by Vivaz! and Quickie Mart, plus the Balkan Booty Squad, food trucks, sangria, a mechanical bull, a dunk tank and more. Tickets start at $15. Doors at 6:30 a.m., run at 8 a.m. Visit www.nolabulls.com for details.