Morning rush
25 min 651 trips · 68% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
South StreettoBoston University East
Green Line
A direct MBTA train from South Street to Boston University East took a median 25 minutes across 3,280 observed trips; 90% of measured rides finished within approximately 29 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical25 min50th percentile
Slower trip29 min90th percentile
Scheduled25 minmedian timetable
On pace72%within 2 min of schedule
THE SHORT ANSWER
How long does South Street to Boston University East take?
The median completed ride from South Street to Boston University East was 25 minutes; the published schedule’s median was 25 minutes.
Based on 3,280 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 25 minutes. That was within 0 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 29 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
South Street to Boston University East times by daypart
Off-peak produced the fastest median for South Street to Boston University East; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
26 min 903 trips · 74% on paceEvening rush
26 min 634 trips · 81% on paceOff-peak
24 min 1,092 trips · 67% on paceMEASUREMENT SAMPLE
How South Street to Boston University East was measured
The South Street to Boston University East estimate uses 3,280 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 Boston University East
The South Street to Boston University East record is accompanied by 6 other measured direct rides beginning at South Street, each with a published median duration.