About an hour. Beats driving.
Typically 30 to 45 minutes from the Franconia Springfield Station to Capital One Arena and approximately 1 hour to 1 hour and 30 minutes from the Franconia Springfield station to the National Zoo.
By blue line during rush hour 45- 1 hr... Outside of rush hour it can take 1.5 hrs due to delays and issues. If there are more than two of you, take Uber
About 40 to 45 minutes. You can go to the DC metros website and check there by putting in your starting point which is Franconia/Springfield Station and destination of Smithsonian and it will give you the travel time.
At least one hour.
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