It's a 10 minute cab/Uber/car ride and about a 30 minute walk.
I have been to the museum a few times and always find parking on the street.. But this is only good if you come early. The museum closes at around 6ish and u cant park on the street after 4!
If you use MapQuest / GPS it can give you more accurate results
Mapquest can give you mileage..
Check with the hotel concierge. The 'distance' is measured in DC by how long it takes to walk, or navigate traffic via cab. There is nowhere nearby to park a car. I have spent an hour looking for a parking spot in DC before. Since entrance ticket is time specific take a cab or the Metro.
A cab ride away!
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