Is this race a Boston Qualifier?

YES.  The course has been measured and certified by USATF standards which makes it a course that can be used to qualify for Boston.  The certification # is ME17007K.  It is all measured and marked and is EXACTLY 42.195K.  Please do not come to the director saying you got a different distance because of your GPS.  The course was ridden several times, cutting all tangents, on a calibrated bicycle using USATF standards.