Morning rush
8.8 min 845 trips · 99% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Back BaytoGreen Street
A direct MBTA train from Back Bay to Green Street took a median 8.8 minutes across 4,127 observed trips; 90% of measured rides finished within approximately 9.8 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
THE SHORT ANSWER
How long does Back Bay to Green Street take?
The median completed ride from Back Bay to Green Street was 8.8 minutes; the published schedule’s median was 10 minutes.
Based on 4,127 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 8.8 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 9.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Back Bay to Green Street times by daypart
Evening rush produced the fastest median for Back Bay to Green Street; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
8.8 min 917 trips · 97% on paceEvening rush
8.8 min 795 trips · 100% on paceOff-peak
8.8 min 1,570 trips · 99% on paceMEASUREMENT SAMPLE
How Back Bay to Green Street was measured
The Back Bay to Green Street estimate uses 4,127 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 Back Bay
Trips related to Back Bay to Green Street
The Back Bay to Green Street record is accompanied by 6 other measured direct rides beginning at Back Bay, each with a published median duration.