Morning rush
25 min 557 trips · 87% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
ArlingtontoChestnut Hill
Green Line
A direct MBTA train from Arlington to Chestnut Hill took a median 25 minutes across 3,321 observed trips; 90% of measured rides finished within approximately 29 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical25 min50th percentile
Slower trip29 min90th percentile
Scheduled26 minmedian timetable
On pace83%within 2 min of schedule
THE SHORT ANSWER
How long does Arlington to Chestnut Hill take?
The median completed ride from Arlington to Chestnut Hill was 25 minutes; the published schedule’s median was 26 minutes.
Based on 3,321 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 25 minutes. That was within 1 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 29 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Arlington to Chestnut Hill times by daypart
Morning rush produced the fastest median for Arlington to Chestnut Hill; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
25 min 879 trips · 81% on paceEvening rush
27 min 710 trips · 85% on paceOff-peak
25 min 1,175 trips · 81% on paceMEASUREMENT SAMPLE
How Arlington to Chestnut Hill was measured
The Arlington to Chestnut Hill estimate uses 3,321 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 Arlington
Trips related to Arlington to Chestnut Hill
The Arlington to Chestnut Hill record is accompanied by 6 other measured direct rides beginning at Arlington, each with a published median duration.