By bus
The Metro station should satisfy most of your travel needs to and from Dupont Circle, but the G2 route (http://wmata.com/bus/time...) along P St between Georgetown University and Howard University is a good way to travel east-west. It stops on P St just off the circle on both sides.
The L2 (http://wmata.com/bus/time...) is a good way to quickly get up 18th St to Adams Morganâit runs up from K St along 20th to New Hampshire, around the circle, back on New Hampshire, and then up 18th St.
Bus 42 (http://wmata.com/bus/time...) runs between Chinatown and Mount Pleasant, stopping in Dupont Circle. It is a good alternative to the Metro to getting to the National Mall area, passing many historical buildings en route.
By Metro
Metro is exceptionally convenient in Dupont Circleâthe Dupont Circle stop on the Red Line is right under the circle itself.
By car
Unless you are an experienced D.C. driver, it is very easy to get turned around in Dupont Circle, or worse yet, wind up on the barbarous circle itself. Street parking is scarce, and limited to two hours during the daytime on weekdays. There are several parking garages, including one on N St between Connecticut and 17th, with daily rates in the $15-$20 range. Late at night, though, you can find street parking in the deserted business district just south of M St in the West End.
Connecticut Ave is the main thoroughfare So is Massachusetts, but its traffic patterns are too confusing to be of much practical value. If passing through, make sure to stay in the left lanes to go under the Circle, not around it. Traffic is terrible on the circle, in volume, confusion, and rage. If you accidentally get on, and don't know what you are doing, stay in the outer lane and get off to save yourself the headache. P St is the best route west to Georgetown.