Morning rush
36 min 639 trips · 88% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Park StreettoChestnut Hill Avenue
Green Line
A direct MBTA train from Park Street to Chestnut Hill Avenue took a median 38 minutes across 3,330 observed trips; 90% of measured rides finished within approximately 44 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical38 min50th percentile
Slower trip44 min90th percentile
Scheduled40 minmedian timetable
On pace84%within 2 min of schedule
THE SHORT ANSWER
How long does Park Street to Chestnut Hill Avenue take?
The median completed ride from Park Street to Chestnut Hill Avenue was 38 minutes; the published schedule’s median was 40 minutes.
Based on 3,330 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 38 minutes. That was within 2 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 44 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Park Street to Chestnut Hill Avenue times by daypart
Morning rush produced the fastest median for Park Street to Chestnut Hill Avenue; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
39 min 903 trips · 82% on paceEvening rush
41 min 609 trips · 83% on paceOff-peak
38 min 1,179 trips · 83% on paceMEASUREMENT SAMPLE
How Park Street to Chestnut Hill Avenue was measured
The Park Street to Chestnut Hill Avenue estimate uses 3,330 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 Chestnut Hill Avenue
The Park Street to Chestnut Hill Avenue record is accompanied by 6 other measured direct rides beginning at Park Street, each with a published median duration.