Morning rush
14 min 664 trips · 91% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Park StreettoSaint Mary's Street
Green Line
A direct MBTA train from Park Street to Saint Mary's Street took a median 14 minutes across 3,516 observed trips; 90% of measured rides finished within approximately 17 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical14 min50th percentile
Slower trip17 min90th percentile
Scheduled15 minmedian timetable
On pace93%within 2 min of schedule
THE SHORT ANSWER
How long does Park Street to Saint Mary's Street take?
The median completed ride from Park Street to Saint Mary's Street was 14 minutes; the published schedule’s median was 15 minutes.
Based on 3,516 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 14 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 17 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Park Street to Saint Mary's Street times by daypart
Morning rush produced the fastest median for Park Street to Saint Mary's Street; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
14 min 886 trips · 92% on paceEvening rush
15 min 715 trips · 94% on paceOff-peak
14 min 1,251 trips · 95% on paceMEASUREMENT SAMPLE
How Park Street to Saint Mary's Street was measured
The Park Street to Saint Mary's Street estimate uses 3,516 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 Park Street
Trips related to Park Street to Saint Mary's Street
The Park Street to Saint Mary's Street record is accompanied by 6 other measured direct rides beginning at Park Street, each with a published median duration.