Not sure how late you mean, but MARTA only runs until around 1:30 AM.
As a note, the schedules listed on the MARTA website can be misleading because two different lines run north from downtown. After 9:30ish, you'd have to take the Gold (Doraville) Line north and change trains at Lindbergh to continue on the Red (North Springs) Line to get to the Medical Center station.
no subject
As a note, the schedules listed on the MARTA website can be misleading because two different lines run north from downtown. After 9:30ish, you'd have to take the Gold (Doraville) Line north and change trains at Lindbergh to continue on the Red (North Springs) Line to get to the Medical Center station.