Morning rush
1.2 min 39 trips · 97% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Chestnut Hill AvenuetoSouth Street
Green Line
A direct MBTA train from Chestnut Hill Avenue to South Street took a median 1.2 minutes across 191 observed trips; 90% of measured rides finished within approximately 1.2 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical1.2 min50th percentile
Slower trip1.2 min90th percentile
Scheduled2.2 minmedian timetable
On pace99%within 2 min of schedule
THE SHORT ANSWER
How long does Chestnut Hill Avenue to South Street take?
The median completed ride from Chestnut Hill Avenue to South Street was 1.2 minutes; the published schedule’s median was 2.2 minutes.
Based on 191 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 1.2 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 1.2 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Chestnut Hill Avenue to South Street times by daypart
Evening rush produced the fastest median for Chestnut Hill Avenue to South Street; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
1.2 min 57 trips · 100% on paceEvening rush
1.2 min 29 trips · 100% on paceOff-peak
1.2 min 66 trips · 100% on paceMEASUREMENT SAMPLE
How Chestnut Hill Avenue to South Street was measured
The Chestnut Hill Avenue to South Street estimate uses 191 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 Avenue
Trips related to Chestnut Hill Avenue to South Street
The Chestnut Hill Avenue to South Street record is accompanied by 6 other measured direct rides beginning at Chestnut Hill Avenue, each with a published median duration.