OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Boston University CentraltoChestnut Hill Avenue

Green Line

A direct MBTA train from Boston University Central to Chestnut Hill Avenue took a median 21 minutes across 3,412 observed trips; 90% of measured rides finished within approximately 24 minutes.

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

Typical21 min50th percentile
Slower trip24 min90th percentile
Scheduled23 minmedian timetable
On pace94%within 2 min of schedule

THE SHORT ANSWER

How long does Boston University Central to Chestnut Hill Avenue take?

The median completed ride from Boston University Central to Chestnut Hill Avenue was 21 minutes; the published schedule’s median was 23 minutes.

Based on 3,412 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 21 minutes. That was within 2.5 minutes of the published schedule.

Nine out of ten measured trips finished within approximately 24 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.

WHEN YOU TRAVEL

Boston University Central to Chestnut Hill Avenue times by daypart

Morning rush produced the fastest median for Boston University Central to Chestnut Hill Avenue; Evening rush produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

19 min 647 trips · 96% on pace

Midday

21 min 881 trips · 96% on pace

Evening rush

21 min 663 trips · 95% on pace

Off-peak

21 min 1,221 trips · 91% on pace

MEASUREMENT SAMPLE

How Boston University Central to Chestnut Hill Avenue was measured

The Boston University Central to Chestnut Hill Avenue estimate uses 3,412 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 →