I Am not a big fan of urban trails but if you are in the D.C. area put this on your bucket list as it is a great system of trails. On a weekends you can expect to run into lots of Bikers some of them are going way to fast for me. This is a Greenway so there are a few grades to it. Lots of canopy and is family friendly.

This trail is a must if you live in the city or visiting the city since Rock Creek park runs straight through the city so you avoid all that city traffic and ride through the park instead. The trail terminates at the Potomac near the Watergate and from there you can go anywhere, go north under the Whitehurst freeway and go on the Canal path or go south along the fish market and Marina. or cross the Memorial Bridge to go to Mt Vernon with its wooden bridges and stop at the sailing marina for a snack or meal with a view or go north to rosevelt island. On the Va side after crossing the memorial bridge you can go south and after you pass the national airport you can go west to fairfax, or you can keep going south and enjoy the lovely waterfront and the waterfront park in old town. Another enjoyable ride is to go south along the Potomac DC side after the Rock Creek trail terminates at the Potomac and when you come to the Lincoln memorial head east and visit the mall area especially the park in front of the Federal Reserve building and the 3 gardens behind the Smithsonian castle and if in Spring keep going east and up the hill when the Capital grounds are in bloom.

"I like this trail because it is near my house and I don't need to travel by car to get to it. It's good because I can run straight to the Lincoln Memorial. Also, it goes past the zoo and I can stop in there and take a peek. Running near the water is also nice. Be careful though because there are some wooded areas that are probably not safe in the evenings. Other than that, I really like this trail for running."