Morning rush
15 min 611 trips · 95% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
South StationtoAshmont
Red Line
A direct MBTA train from South Station to Ashmont took a median 16 minutes across 3,130 observed trips; 90% of measured rides finished within approximately 18 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical16 min50th percentile
Slower trip18 min90th percentile
Scheduled16 minmedian timetable
On pace90%within 2 min of schedule
THE SHORT ANSWER
How long does South Station to Ashmont take?
The median completed ride from South Station to Ashmont was 16 minutes; the published schedule’s median was 16 minutes.
Based on 3,130 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 16 minutes. That was within 0.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 18 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
South Station to Ashmont times by daypart
Morning rush produced the fastest median for South Station to Ashmont; Midday produced the slowest.
Differences can change as the rolling dataset updates.
Midday
16 min 857 trips · 86% on paceEvening rush
16 min 664 trips · 93% on paceOff-peak
15 min 998 trips · 89% on paceMEASUREMENT SAMPLE
How South Station to Ashmont was measured
The South Station to Ashmont estimate uses 3,130 completed direct-trip stop-timestamp pairs matched to the schedule active for each observed train.
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 South Station
Trips related to South Station to Ashmont
The South Station to Ashmont record is accompanied by 6 other measured direct rides beginning at South Station, each with a published median duration.