Morning rush
17 min 621 trips · 83% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Babcock StreettoSouth Street
Green Line
A direct MBTA train from Babcock Street to South Street took a median 18 minutes across 3,417 observed trips; 90% of measured rides finished within approximately 21 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical18 min50th percentile
Slower trip21 min90th percentile
Scheduled18 minmedian timetable
On pace85%within 2 min of schedule
THE SHORT ANSWER
How long does Babcock Street to South Street take?
The median completed ride from Babcock Street to South Street was 18 minutes; the published schedule’s median was 18 minutes.
Based on 3,417 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 18 minutes. That was within 0.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 21 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Babcock Street to South Street times by daypart
Morning rush produced the fastest median for Babcock Street to South Street; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
18 min 887 trips · 88% on paceEvening rush
18 min 665 trips · 89% on paceOff-peak
18 min 1,244 trips · 81% on paceMEASUREMENT SAMPLE
How Babcock Street to South Street was measured
The Babcock Street to South Street estimate uses 3,417 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 Babcock Street
Trips related to Babcock Street to South Street
The Babcock Street to South Street record is accompanied by 6 other measured direct rides beginning at Babcock Street, each with a published median duration.