Morning rush
8.8 min 599 trips · 97% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Griggs StreettoChestnut Hill Avenue
Green Line
A direct MBTA train from Griggs Street to Chestnut Hill Avenue took a median 9.2 minutes across 3,429 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 pace96%within 2 min of schedule
THE SHORT ANSWER
How long does Griggs Street to Chestnut Hill Avenue take?
The median completed ride from Griggs Street to Chestnut Hill Avenue was 9.2 minutes; the published schedule’s median was 10 minutes.
Based on 3,429 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
Griggs Street to Chestnut Hill Avenue times by daypart
Morning rush produced the fastest median for Griggs Street to Chestnut Hill Avenue; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
9.2 min 894 trips · 99% on paceEvening rush
9.2 min 665 trips · 98% on paceOff-peak
9.8 min 1,271 trips · 94% on paceMEASUREMENT SAMPLE
How Griggs Street to Chestnut Hill Avenue was measured
The Griggs Street to Chestnut Hill Avenue estimate uses 3,429 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 Griggs Street
Trips related to Griggs Street to Chestnut Hill Avenue
The Griggs Street to Chestnut Hill Avenue record is accompanied by 6 other measured direct rides beginning at Griggs Street, each with a published median duration.