Denver Airport Car Rental Services are just outside of the Denver Airport.
Once you exit the Denver Airport Building, after arrivals, head directly ourside for the relevant free shuttles provided by the appropriate rental company.
I used Hertz for it convenience, as a Gold member I just have to get to the rental centre and look for my allocated car parking lot and pick up the car and drive to the exit where the car and drivers licence is checked and the way you go.
