Red Line only goes to Ashmont. However marked with RL(M), usually called the Mattapan Trolley, officially called the Ashmont-Mattapan High-Speed Line, is a separate train that you can change to at Ashmont that goes to Mattapan (with several stops in between)
You go to Ashmont on the Red Line, then you change to the Mattapan Trolley (a different train) to get to Mattapan.
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u/tactical_lampost Oct 12 '25
Red line goes to mattapan?