Morning rush
12 min 612 trips · 99% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Saint Mary's StreettoDean Road
Green Line
A direct MBTA train from Saint Mary's Street to Dean Road took a median 13 minutes across 3,547 observed trips; 90% of measured rides finished within approximately 15 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical13 min50th percentile
Slower trip15 min90th percentile
Scheduled15 minmedian timetable
On pace97%within 2 min of schedule
THE SHORT ANSWER
How long does Saint Mary's Street to Dean Road take?
The median completed ride from Saint Mary's Street to Dean Road was 13 minutes; the published schedule’s median was 15 minutes.
Based on 3,547 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 13 minutes. That was within 2 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 15 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Saint Mary's Street to Dean Road times by daypart
Morning rush produced the fastest median for Saint Mary's Street to Dean Road; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
13 min 897 trips · 98% on paceEvening rush
14 min 655 trips · 98% on paceOff-peak
13 min 1,383 trips · 94% on paceMEASUREMENT SAMPLE
How Saint Mary's Street to Dean Road was measured
The Saint Mary's Street to Dean Road estimate uses 3,547 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 Saint Mary's Street
Trips related to Saint Mary's Street to Dean Road
The Saint Mary's Street to Dean Road record is accompanied by 6 other measured direct rides beginning at Saint Mary's Street, each with a published median duration.