Online registration is open for the Crystal City Twilighter here You may register in person at any Pacers Running Store. Charity partner raffle: Eligible registrants seeking inclusion in the charity partner raffle must register before midnight, Monday, July 21. See “volunteer” tab for more information. Runner Premium: Saucony Technical Tees Participants will receive a Saucony technical race t-shirt as part of their registration. Please note that due to availability, men’s sizes large and extra large will not be available until after the event. Participants requesting size large or extra large may have the shirts mailed to the address provided with their registration or pick up at Pacers Arlington (pick up/delivery option selected during registration process). Please allow four weeks. Shirts will be mailed by our screening and fulfillment partner, SureShip. Questions? Please contact Tiffany at tiffany@runpacers.com.