Category Events - United States, Ashburn (VA) Cinco de Mayo: BlackFINN Fiesta - Saturday, May 5th feat. Chihuahua races! Entry into BlackFINN Fiesta at Blackfinn Ameripub - Ashburn is free but be sure to grab your tickets to get the most out of your cinco! $10 Ticket Includes: -Frozen Margarita -Nacho Bar -Chef Made Guacamole Station Chihuahua Races: Starts at 5pm Register your winning Chihuahua for a dog approved swag bag and chance to snag the grand prize! Email email@example.com to register your chihuahua!