Chain Bridge Loop
(hilly roads followed by flat and soft towpath)
See FULL MAP and the Chain Bridge Area Map
 
0.0
0.6

1.4
2.1
 

2.9
3.3
4.6
 

5.3

9.0
10.0

Begin at Iwo Jima, go to Custis Trail 
West on Custis Trail / Lee Hwy sidewalk
Go up long Rosslyn hill
Turn right onto Custis Trail after crossing I-66 bridge
Just after crossing bridge over Sprout Run Pkwy, turnoff sharply to the left
Go under bridge and immediately turn left on bike trail to Lorcum Lane
Run down Lorcum Lane
Right on Nellie Custis Dr. Big long hill.
Nellie Custis becomes Military Rd.
Go to end of Miltary Rd, turn right over bridge, then left at Bike Route sign
Take a right at another Bike Route sign, go down steep hill to Chain Bridge
Watch traffic, cross bridge on left side
At end of bridge, follow walkway to left down to C&O Canal Towpath
Return towards Georgetown
Go across Key Bridge
Finish at Iwo Jima

AFTER KEY BRIDGE, OPTIONALLY TACK ON 
ANY NUMBER OF 1.5 MILE LOOPS AROUND 
SCENIC ROOSEVELT ISLAND