Morning rush
9.8 min 595 trips · 94% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Allston StreettoSouth Street
Green Line
A direct MBTA train from Allston Street to South Street took a median 10 minutes across 3,422 observed trips; 90% of measured rides finished within approximately 12 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical10 min50th percentile
Slower trip12 min90th percentile
Scheduled11 minmedian timetable
On pace95%within 2 min of schedule
THE SHORT ANSWER
How long does Allston Street to South Street take?
The median completed ride from Allston Street to South Street was 10 minutes; the published schedule’s median was 11 minutes.
Based on 3,422 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 10 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 12 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Allston Street to South Street times by daypart
Midday produced the fastest median for Allston Street to South Street; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
9.8 min 895 trips · 98% on paceEvening rush
10 min 661 trips · 96% on paceOff-peak
10 min 1,271 trips · 94% on paceMEASUREMENT SAMPLE
How Allston Street to South Street was measured
The Allston Street to South Street estimate uses 3,422 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 Allston Street
Trips related to Allston Street to South Street
The Allston Street to South Street record is accompanied by 6 other measured direct rides beginning at Allston Street, each with a published median duration.