Morning rush
24 min 653 trips · 72% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
South StreettoBoston University Central
Green Line
A direct MBTA train from South Street to Boston University Central took a median 24 minutes across 3,286 observed trips; 90% of measured rides finished within approximately 28 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical24 min50th percentile
Slower trip28 min90th percentile
Scheduled24 minmedian timetable
On pace76%within 2 min of schedule
THE SHORT ANSWER
How long does South Street to Boston University Central take?
The median completed ride from South Street to Boston University Central was 24 minutes; the published schedule’s median was 24 minutes.
Based on 3,286 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 24 minutes. That was within 0.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 28 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 Central times by daypart
Off-peak produced the fastest median for South Street to Boston University Central; Midday produced the slowest.
Differences can change as the rolling dataset updates.
Midday
24 min 905 trips · 79% on paceEvening rush
24 min 634 trips · 89% on paceOff-peak
23 min 1,094 trips · 69% on paceMEASUREMENT SAMPLE
How South Street to Boston University Central was measured
The South Street to Boston University Central estimate uses 3,286 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 Central
The South Street to Boston University Central record is accompanied by 6 other measured direct rides beginning at South Street, each with a published median duration.