The Grand Prix of Portland is back as the NTT IndyCar Series race weekend returns to Portland International Raceway (PIR), September 2-4. Tickets for the 28th running of this spectacular open-wheel racing tradition in the Rose City can be purchased online at portlandgp.com. Ticket prices start as low as $20 for Single Day General Admission and $70 for Single Day Grandstand seats. Three-day tickets remain available for purchase and offer the best fan value. General Admission for the entire weekend is just $65, and a 3-Day Grandstand reserved seat starts at $85 which includes gate admission.