Morning rush
22 min 656 trips · 97% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
AssemblytoStony Brook
Orange Line
A direct MBTA train from Assembly to Stony Brook took a median 22 minutes across 2,916 observed trips; 90% of measured rides finished within approximately 24 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical22 min50th percentile
Slower trip24 min90th percentile
Scheduled23 minmedian timetable
On pace95%within 2 min of schedule
THE SHORT ANSWER
How long does Assembly to Stony Brook take?
The median completed ride from Assembly to Stony Brook was 22 minutes; the published schedule’s median was 23 minutes.
Based on 2,916 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 22 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 24 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Assembly to Stony Brook times by daypart
Off-peak produced the fastest median for Assembly to Stony Brook; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
22 min 664 trips · 93% on paceEvening rush
22 min 682 trips · 93% on paceOff-peak
21 min 914 trips · 95% on paceMEASUREMENT SAMPLE
How Assembly to Stony Brook was measured
The Assembly to Stony Brook estimate uses 2,916 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 Assembly
Trips related to Assembly to Stony Brook
The Assembly to Stony Brook record is accompanied by 6 other measured direct rides beginning at Assembly, each with a published median duration.