OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Amory StreettoGriggs Street

Green Line

A direct MBTA train from Amory Street to Griggs Street took a median 7.8 minutes across 3,432 observed trips; 90% of measured rides finished within approximately 9.8 minutes.

Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only

Typical7.8 min50th percentile
Slower trip9.8 min90th percentile
Scheduled9.2 minmedian timetable
On pace97%within 2 min of schedule

THE SHORT ANSWER

How long does Amory Street to Griggs Street take?

The median completed ride from Amory Street to Griggs Street was 7.8 minutes; the published schedule’s median was 9.2 minutes.

Based on 3,432 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 7.8 minutes. That was within 1.5 minutes of the published schedule.

Nine out of ten measured trips finished within approximately 9.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.

WHEN YOU TRAVEL

Amory Street to Griggs Street times by daypart

Morning rush produced the fastest median for Amory Street to Griggs Street; Evening rush produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

7.2 min 626 trips · 99% on pace

Midday

7.8 min 889 trips · 98% on pace

Evening rush

8.2 min 667 trips · 95% on pace

Off-peak

7.8 min 1,250 trips · 96% on pace

MEASUREMENT SAMPLE

How Amory Street to Griggs Street was measured

The Amory Street to Griggs Street estimate uses 3,432 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 →