Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guide extension catheter. The guide extension catheter may include a proximal shaft having a first outer diameter. A distal sheath may be attached to the proximal shaft and may have a second outer diameter greater than the first outer diameter. A trackable tip member may be attached to the distal sheath and extending distally therefrom. The trackable tip member may define a guidewire lumen therein.
