This weekend there will be longer hours on Metrorail.
It opens two hours early - at 5 a.m. - on Saturday, for the benefit of customers traveling to the SunTrust Rock 'n' Roll Marathon & CareFirst BlueCross BlueShield Rock 'n' Roll Half Marathon. Trains will be crowded though and those planning to ride are encouraged to use a SmarTrip card, loaded with enough value for a round trip.
The marathon is expected to snarl traffic for tourists headed to DC this weekend by car.
