Morning rush
1.8 min 509 trips · 99% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
South StreettoChestnut Hill Avenue
Green Line
A direct MBTA train from South Street to Chestnut Hill Avenue took a median 1.8 minutes across 2,728 observed trips; 90% of measured rides finished within approximately 2.8 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical1.8 min50th percentile
Slower trip2.8 min90th percentile
Scheduled1.2 minmedian timetable
On pace99%within 2 min of schedule
THE SHORT ANSWER
How long does South Street to Chestnut Hill Avenue take?
The median completed ride from South Street to Chestnut Hill Avenue was 1.8 minutes; the published schedule’s median was 1.2 minutes.
Based on 2,728 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 1.8 minutes. That was 0.5 minutes longer than the published schedule.
Nine out of ten measured trips finished within approximately 2.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
South Street to Chestnut Hill Avenue times by daypart
Evening rush produced the fastest median for South Street to Chestnut Hill Avenue; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
1.8 min 730 trips · 99% on paceEvening rush
1.8 min 540 trips · 99% on paceOff-peak
1.8 min 949 trips · 99% on paceMEASUREMENT SAMPLE
How South Street to Chestnut Hill Avenue was measured
The South Street to Chestnut Hill Avenue estimate uses 2,728 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 South Street
Trips related to South Street to Chestnut Hill Avenue
The South Street to Chestnut Hill Avenue record is accompanied by 6 other measured direct rides beginning at South Street, each with a published median duration.