Morning rush
5.8 min 609 trips · 98% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Dean RoadtoSummit Avenue
Green Line
A direct MBTA train from Dean Road to Summit Avenue took a median 5.2 minutes across 2,943 observed trips; 90% of measured rides finished within approximately 6.2 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical5.2 min50th percentile
Slower trip6.2 min90th percentile
Scheduled6.2 minmedian timetable
On pace98%within 2 min of schedule
THE SHORT ANSWER
How long does Dean Road to Summit Avenue take?
The median completed ride from Dean Road to Summit Avenue was 5.2 minutes; the published schedule’s median was 6.2 minutes.
Based on 2,943 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 5.2 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 6.2 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Dean Road to Summit Avenue times by daypart
Off-peak produced the fastest median for Dean Road to Summit Avenue; Morning rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
5.2 min 790 trips · 98% on paceEvening rush
5.2 min 606 trips · 98% on paceOff-peak
4.8 min 938 trips · 99% on paceMEASUREMENT SAMPLE
How Dean Road to Summit Avenue was measured
The Dean Road to Summit Avenue estimate uses 2,943 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 Dean Road
Trips related to Dean Road to Summit Avenue
The Dean Road to Summit Avenue record is accompanied by 6 other measured direct rides beginning at Dean Road, each with a published median duration.