I didn't run with my camera though, so I'll let my Garmin recordings tell you about my runs. If a picture is worth a thousand words, how many words is a 3-hour GPS track worth...? ;-) In DC, I ran 5 times through Rock Creek Park for a total of 92 miles. Some people might have thought that I moved in the area... Rock Creek Park connects with the trails on the Mall and along the Potomac so, where every you are staying in DC, either in Georgetown or near West End, the bike path is easy to find and get on. It goes all the way to the North corner of the District of Columbia and the border with Maryland, and keeps going through Maryland outside the Capital Beltway.
more details in Garmin Connect.