September 2nd Update: We've reached our cap on guaranteed shirts and medals.  Registration is still open, but any entry received after September 2nd will not be guaranteed a souvenir race shirt or souvenir medal.  

On race day, all remaining shirts and medals will be at the Run Tucson tent at the finish line expo area.  

In terms of shirt sizing, we do not know exactly how these sublimated shirts will fit so you can take the size that best fits you, regardless of the size you choose at registration.  We've ordered extra sizes so everyone should get the size they want, but shirt sizing is first-come, first-served at packet pickup.