Start at Iwo Jima, Cross Memorial Bridge (on the left)
Go left, follow Rock Creek paved bike path
After 4.5 miles from start, you'll go over 2nd footbridge
Then turn left up hill at Exercise Station 17
The big street at the top is Calvert, adjacent to Woodley Park
Turn left on Calvert St. (there may not be a street sign here)
Go 1/3 mile, and bear right on Cleveland Ave
Go 2/3 mile up Cleveland Ave, then bear right on 34th St
Go for about 1 block (National Cathedral on your left)
Left on Woodley Rd (Cathedral on your left)
Go 1/3 mile on Woodley, turn left on Wisconsin
Go 3 blocks then bear left on Massachusetts Ave
Begin going downhill finally
Pass the Naval Observatory / VP's residence on your right
See how many embassies you can spot
After a mile on Mass, turn right up Whitehaven St. (HILL!)
Just before top of hill, see Clinton's house on right
At the top of the hill, by a fence, turn left onto dirt trail
You are now in Dumbarton Oaks
Left at the bottom of the hill on dirt trail
In 100 yards, cross "Lover's Lane" and continue in same direction along creek
Go 1/3 mile, turn left along dirt trail toward Connecticut
Pass under the big Mass. Ave bridge, parallel to the paved Rock Creek trail
Go 1/2 mile, turn right on paved trail across the footbridge
Return the 4.5 miles back to Iwo Jima