Morning rush
38 min 637 trips · 87% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Park StreettoSouth Street
Green Line
A direct MBTA train from Park Street to South Street took a median 40 minutes across 3,329 observed trips; 90% of measured rides finished within approximately 46 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical40 min50th percentile
Slower trip46 min90th percentile
Scheduled42 minmedian timetable
On pace82%within 2 min of schedule
THE SHORT ANSWER
How long does Park Street to South Street take?
The median completed ride from Park Street to South Street was 40 minutes; the published schedule’s median was 42 minutes.
Based on 3,329 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 40 minutes. That was within 2 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 46 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Park Street to South Street times by daypart
Morning rush produced the fastest median for Park Street to South Street; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
41 min 903 trips · 81% on paceEvening rush
43 min 610 trips · 82% on paceOff-peak
40 min 1,179 trips · 82% on paceMEASUREMENT SAMPLE
How Park Street to South Street was measured
The Park Street to South Street estimate uses 3,329 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 Park Street
Trips related to Park Street to South Street
The Park Street to South Street record is accompanied by 6 other measured direct rides beginning at Park Street, each with a published median duration.