We report simultaneous H110{alpha} and H_2_CO line observations with the NRAO Green Bank Telescope toward 72HII regions in the Spitzer Space Telescope GLIMPSE survey area (|l|=10{deg}-65{deg} and |b|<=1{deg}). We used the H110{alpha} line to establish the velocity of the HII regions and H_2_CO absorption lines to distinguish between near and far distances. Accurate distances are crucial for the determination of physical properties of massive star formation regions.