The Red Derby is about a ten minute walk from both the Columbia Heights and Georgia Avenue Metro Stations, which are on the Green and Yellow lines.
When exiting the Georgia Avenue Metro you will want to walk north along Georgia Avenue less then a half a block and take a left onto Quincy Street. Proceed directly along Quincy Street until you get to 14th Street, where Quincy Street comes to an end. When you reach 14th and Quincy, The Red Derby will be directly in front of you. It is only about a four block walk, but they are four long blocks. (If you cross Kansas Avenue you are headed in the right direction.)
The Columbia Heights Metro exits right onto wither side of 14th Street.
Walk north on 14th Street (past the new mall construction, in the direction of the Tivoli Theater and the Giant supermarket.) Proceed along 14th for about nine (short) blocks. The Red Derby will be on your left hand side about a half a block up after you cross Spring Road. (If you cross Park Road, Monroe, Meridian, Newton, etc. you are headed in the right direction.)
The 52, 53 and 54 buses run along 14th Street between downtown DC and the Takoma Park Metro Station. They stop within feet at The Red Derby. Look to get off at Spring Street and walk up half a block.
The S1, S2, and S3 buses run along 16th Street between downtown DC and the Silver Spring Metro Station. Look to get off at Spring Road, and walk two blocks over to 14th Street. Take a left on 14th and walk north half of a block to The Red Derby.