Morning rush
32 min 644 trips · 77% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
PortertoAshmont
Red Line
A direct MBTA train from Porter to Ashmont took a median 33 minutes across 3,131 observed trips; 90% of measured rides finished within approximately 38 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical33 min50th percentile
Slower trip38 min90th percentile
Scheduled33 minmedian timetable
On pace74%within 2 min of schedule
THE SHORT ANSWER
How long does Porter to Ashmont take?
The median completed ride from Porter to Ashmont was 33 minutes; the published schedule’s median was 33 minutes.
Based on 3,131 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 33 minutes. That was within 0.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 38 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Porter to Ashmont times by daypart
Off-peak produced the fastest median for Porter to Ashmont; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
33 min 844 trips · 72% on paceEvening rush
34 min 672 trips · 74% on paceOff-peak
32 min 971 trips · 73% on paceMEASUREMENT SAMPLE
How Porter to Ashmont was measured
The Porter to Ashmont estimate uses 3,131 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 Ashmont
The Porter to Ashmont record is accompanied by 6 other measured direct rides beginning at Porter, each with a published median duration.