Morning rush
15 min 1,329 trips · 91% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
PortertoSouth Station
Red Line
A direct MBTA train from Porter to South Station took a median 16 minutes across 6,272 observed trips; 90% of measured rides finished within approximately 18 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical16 min50th percentile
Slower trip18 min90th percentile
Scheduled16 minmedian timetable
On pace89%within 2 min of schedule
THE SHORT ANSWER
How long does Porter to South Station take?
The median completed ride from Porter to South Station was 16 minutes; the published schedule’s median was 16 minutes.
Based on 6,272 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 16 minutes. That was within 0.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 18 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Porter to South Station times by daypart
Morning rush produced the fastest median for Porter to South Station; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
16 min 1,630 trips · 90% on paceEvening rush
16 min 1,357 trips · 85% on paceOff-peak
15 min 1,956 trips · 89% on paceMEASUREMENT SAMPLE
How Porter to South Station was measured
The Porter to South Station estimate uses 6,272 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 Porter
Trips related to Porter to South Station
The Porter to South Station record is accompanied by 6 other measured direct rides beginning at Porter, each with a published median duration.