Farragut Square (17th and I sts., NW), where you'll find Amorini Panini, Cathy's Bistro, Big Cheese, Caribbean Cafe, Halal Grill, and Red Hook Lobster Pound; Lemongrass Truck, and Tasty Kabob (nearby at 20th and L).
L'Enfant (Sixth St. and Maryland Ave., SW), where you'll find DC Ballers, DC Slices, Crab Cab, Little Italy, Caribbean Cafe, Halal Grill, Feelin' Crabby, What the Pho?, Captain Cookie, DC Taco Truck, and OoH DaT ChiCkeN.
Montgomery County, where you'll find Holy Crepes (Rockville).
NoMa (First and M sts., NE), where you'll find Phillies Phamous.
Northern Virginia, where you'll find Guapo's, Lemongrass Truck, Mediterranean Delights, Kafta Mania (Ballston), DC Sliders, Urban Bumpkin BBQ (Court House), Spitfire, Curley's Q (Herndon), Fava Pot (Reston), Bada Bing, Choupi Crepes (Rosslyn), Willie's Po' Boy (Arlington Hall), Tapas Truck, Korean BBQ Taco Box, and The Wagon (Tysons).
Union Station (North Capitol St. and Massachusetts Ave., NE), where you'll find DC Slices, Hungry Heart, Phonation, Pho Junkies, Italian Subs, BurGorilla, Far East Taco Grille (Burrito Squad), CapMac, and Pepe.