best route from Columbia Pike (S Barton St) to Georgetown.

[mfvanuatu]

I am about to get back into bike commuting after almost 2 years out and have since moved house and moved jobs and am trying to work out the best route from Columbia Pike (S Barton St) to Georgetown.

It looks like I can either follow 27 round the south side of the pentagon and join Mt Veron trail- Custis trail across Key Bridge...
Or....
Work my way to north arlington on roads

Any familiar with these routes? What would you recommend?
With the huge improvement in the weather I am feeling ready to take the plunge once again.

Thanks!

[consularrider]

I'd rather not have to deal with rush hour traffic around the Pentagon on 27. I frequently take Garfield across Rte 50 and then over to Highland into Clarendon and then take the combination of Clarendon/Wilson down to Lynn St that then goes across Key Bridge. From Barton, you could cross 50 on Walter Reed/Fillmore, the only problem being that it is rather narrow from from S 2nd St to Rte 50. I cut from Fillmore to Highland once I cross Pershing to take advantage of better traffic lights.

[hencio]

Check out google maps. They just added bike routes as beta. Upon checking out my normal route to work, their route matches almost turn by turn the safest shortest route I've come up with over time.