Morning rush
20 min 672 trips · 97% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
South StationtoQuincy Adams
Red Line
A direct MBTA train from South Station to Quincy Adams took a median 20 minutes across 3,131 observed trips; 90% of measured rides finished within approximately 23 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical20 min50th percentile
Slower trip23 min90th percentile
Scheduled21 minmedian timetable
On pace90%within 2 min of schedule
THE SHORT ANSWER
How long does South Station to Quincy Adams take?
The median completed ride from South Station to Quincy Adams was 20 minutes; the published schedule’s median was 21 minutes.
Based on 3,131 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 20 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 23 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
South Station to Quincy Adams times by daypart
Morning rush produced the fastest median for South Station to Quincy Adams; Midday produced the slowest.
Differences can change as the rolling dataset updates.
Midday
20 min 774 trips · 83% on paceEvening rush
20 min 663 trips · 90% on paceOff-peak
20 min 1,022 trips · 90% on paceMEASUREMENT SAMPLE
How South Station to Quincy Adams was measured
The South Station to Quincy Adams estimate uses 3,131 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 Quincy Adams
The South Station to Quincy Adams record is accompanied by 6 other measured direct rides beginning at South Station, each with a published median duration.