Sign up for your free alumni membership card by registering here. You will be mailed a card within 10 to 14 business days of registration. If you can't wait, then you can stop by the Simon Benson House at 1803 SW Park Ave during normal business hours and pick up your card.
Take your card to the Rec Center Member Service desk and ask to register as a Portland State Alumni. Click here to view the pricing for an alumni Rec Center membership.