Morning rush
29 min 671 trips · 92% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Stony BrooktoOak Grove
Orange Line
A direct MBTA train from Stony Brook to Oak Grove took a median 30 minutes across 2,912 observed trips; 90% of measured rides finished within approximately 33 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical30 min50th percentile
Slower trip33 min90th percentile
Scheduled31 minmedian timetable
On pace91%within 2 min of schedule
THE SHORT ANSWER
How long does Stony Brook to Oak Grove take?
The median completed ride from Stony Brook to Oak Grove was 30 minutes; the published schedule’s median was 31 minutes.
Based on 2,912 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 30 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 33 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Stony Brook to Oak Grove times by daypart
Morning rush produced the fastest median for Stony Brook to Oak Grove; Midday produced the slowest.
Differences can change as the rolling dataset updates.
Midday
30 min 675 trips · 88% on paceEvening rush
30 min 648 trips · 92% on paceOff-peak
29 min 918 trips · 90% on paceMEASUREMENT SAMPLE
How Stony Brook to Oak Grove was measured
The Stony Brook to Oak Grove estimate uses 2,912 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 Stony Brook
Trips related to Stony Brook to Oak Grove
The Stony Brook to Oak Grove record is accompanied by 6 other measured direct rides beginning at Stony Brook, each with a published median duration.