Morning rush
31 min 583 trips · 83% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Chestnut HilltoPark Street
Green Line
A direct MBTA train from Chestnut Hill to Park Street took a median 31 minutes across 3,251 observed trips; 90% of measured rides finished within approximately 37 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical31 min50th percentile
Slower trip37 min90th percentile
Scheduled32 minmedian timetable
On pace75%within 2 min of schedule
THE SHORT ANSWER
How long does Chestnut Hill to Park Street take?
The median completed ride from Chestnut Hill to Park Street was 31 minutes; the published schedule’s median was 32 minutes.
Based on 3,251 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 31 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 37 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Chestnut Hill to Park Street times by daypart
Off-peak produced the fastest median for Chestnut Hill to Park Street; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
32 min 781 trips · 75% on paceEvening rush
33 min 688 trips · 62% on paceOff-peak
30 min 1,199 trips · 79% on paceMEASUREMENT SAMPLE
How Chestnut Hill to Park Street was measured
The Chestnut Hill to Park Street estimate uses 3,251 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 Chestnut Hill
Trips related to Chestnut Hill to Park Street
The Chestnut Hill to Park Street record is accompanied by 6 other measured direct rides beginning at Chestnut Hill, each with a published median duration.