Race Notes: The 29th Annual Shamrock Run presented by Ahlgrim Dental Offices will be held March 18th! Race starts at 9am! Registration is now open ONLINE. Online registration will end March 14th and 11pm. Packet pick up and onsite registration will take place at the Fairgrounds YMCA. Race day sign in will be at the Dulles State Office Building from 6:30 am-8:00 am and the race will begin at 9AM SHARP!