Morning rush
9.8 min 662 trips · 91% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Chestnut Hill AvenuetoGriggs Street
Green Line
A direct MBTA train from Chestnut Hill Avenue to Griggs Street took a median 9.2 minutes across 3,350 observed trips; 90% of measured rides finished within approximately 11 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical9.2 min50th percentile
Slower trip11 min90th percentile
Scheduled10 minmedian timetable
On pace94%within 2 min of schedule
THE SHORT ANSWER
How long does Chestnut Hill Avenue to Griggs Street take?
The median completed ride from Chestnut Hill Avenue to Griggs Street was 9.2 minutes; the published schedule’s median was 10 minutes.
Based on 3,350 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 9.2 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 11 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Chestnut Hill Avenue to Griggs Street times by daypart
Midday produced the fastest median for Chestnut Hill Avenue to Griggs Street; Morning rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
9.2 min 889 trips · 94% on paceEvening rush
9.8 min 665 trips · 98% on paceOff-peak
9.2 min 1,134 trips · 93% on paceMEASUREMENT SAMPLE
How Chestnut Hill Avenue to Griggs Street was measured
The Chestnut Hill Avenue to Griggs Street estimate uses 3,350 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 Chestnut Hill Avenue
Trips related to Chestnut Hill Avenue to Griggs Street
The Chestnut Hill Avenue to Griggs Street record is accompanied by 6 other measured direct rides beginning at Chestnut Hill Avenue, each with a published median duration.