Most the 787 test flights involved flying circuits around Washington State (when they at Boeing Field) or over the Pacific (when at Victorville). Well today ZA003 is taking a a leisurely jaunt around the country according to Flightaware.com. The track takes the 787 eastward over Washington, Idaho and Montana then heads southeast over Wyoming, Colorado, nips a part of Kansas then over Oklahoma into Texas. It takes a right turn over Texas then flies a north westerly route over southern New Mexico and southern Arizona going into California close to the California-Mexico border and flies along that border at which point near San Diego it will turn north and fly over LA and San Francisco. It then takes a direct northerly route from there going over northern California, through Oregon and into Washington State and ending at Boeing Field in Seattle. This flight test should last a little over 8 hours.
Check out the Flightaware live flight tracking for this flight.