Morning rush
9.2 min 696 trips · 98% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
AshmonttoMattapan
Mattapan Line
A direct train took 9.2 minutes on a typical trip. On a slower-than-usual trip, allow up to 11 minutes.
Typical9.2 min50th percentile
Slower trip11 min90th percentile
Scheduled10 minmedian timetable
On pace98%within 2 min of schedule
THE SHORT ANSWER
How long does Ashmont to Mattapan take?
Based on 3,269 direct trips between 2026-08-17 and 2026-09-15, the median observed ride was 9.2 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 11 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Time-of-day breakdown
Midday produced the fastest typical result in this window; Evening rush was slowest. Differences can change as the rolling dataset updates.
Midday
9.2 min 851 trips · 99% on paceEvening rush
9.8 min 801 trips · 98% on paceOff-peak
9.2 min 921 trips · 99% on paceHOW TO READ THIS
Measured, not promised.
TransitMeter pairs vehicle stop timestamps with the schedule active for each trip. We publish the median because one dramatic delay should not define an everyday journey, and the 90th percentile because riders still need to understand the bad end of normal.
We do not infer why a trip ran slowly. Construction, incidents, crowding and weather require separate evidence.
Read the complete method →MORE FROM Ashmont