Morning rush
29 min 554 trips · 92% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Park StreettoChestnut Hill
Green Line
A direct MBTA train from Park Street to Chestnut Hill took a median 30 minutes across 3,290 observed trips; 90% of measured rides finished within approximately 34 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical30 min50th percentile
Slower trip34 min90th percentile
Scheduled32 minmedian timetable
On pace88%within 2 min of schedule
THE SHORT ANSWER
How long does Park Street to Chestnut Hill take?
The median completed ride from Park Street to Chestnut Hill was 30 minutes; the published schedule’s median was 32 minutes.
Based on 3,290 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 30 minutes. That was within 2.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 34 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 times by daypart
Off-peak produced the fastest median for Park Street to Chestnut Hill; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
30 min 879 trips · 86% on paceEvening rush
31 min 697 trips · 91% on paceOff-peak
29 min 1,160 trips · 85% on paceMEASUREMENT SAMPLE
How Park Street to Chestnut Hill was measured
The Park Street to Chestnut Hill estimate uses 3,290 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
The Park Street to Chestnut Hill record is accompanied by 6 other measured direct rides beginning at Park Street, each with a published median duration.