It would be in your interest to PM me
I live in Twinbrook and you live right on top of the Rock Creek bike path. You have a very easy bike commute to the Bethesda Medical Center. Here are the directions:
Get on bike path iether from Viers Mill Rd, Baltimore Rd or next to the Brum athletic fields and turn right towards DC. Bike on path for several miles (8-9 I am guessing). After you go under the beltway (ride for another mile) there will be a path that take you thru a small neighborhood (about 500 yards) to the intersection of Jones Bridge and Jones Mill. Now here I get confused on the street names (direction wise) but you want to cross the road and head straight. This will take you to Wisconsin and Jones Bridge (I think, it could be Jones Mill and Wisconsin, but I get these 2 roads confused). The medical center is here. Actually, so are the bars.
As far as trails, PM me, there are several in Gaithersburg and 1 in Bethesda/Rockville (Cabin John). I can give directions for those.