Morning rush
6.8 min 1,072 trips · 97% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Stony BrooktoBack Bay
Orange Line
A direct MBTA train from Stony Brook to Back Bay took a median 6.8 minutes across 5,119 observed trips; 90% of measured rides finished within approximately 7.8 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical6.8 min50th percentile
Slower trip7.8 min90th percentile
Scheduled9.2 minmedian timetable
On pace98%within 2 min of schedule
THE SHORT ANSWER
How long does Stony Brook to Back Bay take?
The median completed ride from Stony Brook to Back Bay was 6.8 minutes; the published schedule’s median was 9.2 minutes.
Based on 5,119 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 6.8 minutes. That was within 2.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 7.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Stony Brook to Back Bay times by daypart
Evening rush produced the fastest median for Stony Brook to Back Bay; Midday produced the slowest.
Differences can change as the rolling dataset updates.
Midday
7.2 min 1,174 trips · 97% on paceEvening rush
6.8 min 1,095 trips · 99% on paceOff-peak
6.8 min 1,778 trips · 98% on paceMEASUREMENT SAMPLE
How Stony Brook to Back Bay was measured
The Stony Brook to Back Bay estimate uses 5,119 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 Stony Brook
Trips related to Stony Brook to Back Bay
The Stony Brook to Back Bay record is accompanied by 6 other measured direct rides beginning at Stony Brook, each with a published median duration.