Morning rush
21 min 645 trips · 93% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Boston University CentraltoSouth Street
Green Line
A direct MBTA train from Boston University Central to South Street took a median 23 minutes across 3,409 observed trips; 90% of measured rides finished within approximately 26 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical23 min50th percentile
Slower trip26 min90th percentile
Scheduled25 minmedian timetable
On pace92%within 2 min of schedule
THE SHORT ANSWER
How long does Boston University Central to South Street take?
The median completed ride from Boston University Central to South Street was 23 minutes; the published schedule’s median was 25 minutes.
Based on 3,409 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 23 minutes. That was within 2.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 26 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Boston University Central to South Street times by daypart
Morning rush produced the fastest median for Boston University Central to South Street; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
23 min 880 trips · 94% on paceEvening rush
24 min 664 trips · 94% on paceOff-peak
23 min 1,220 trips · 90% on paceMEASUREMENT SAMPLE
How Boston University Central to South Street was measured
The Boston University Central to South Street estimate uses 3,409 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 Boston University Central
Trips related to Boston University Central to South Street
The Boston University Central to South Street record is accompanied by 6 other measured direct rides beginning at Boston University Central, each with a published median duration.
Boston University Central → Blandford Street2.8 minBoston University Central → Babcock Street4.2 minBoston University Central → Hynes Convention Center7.8 minBoston University Central → Packard's Corner6.8 minBoston University Central → Harvard Avenue8.8 minBoston University Central → Kenmore4.8 min