OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Cedar GrovetoAshmont

Mattapan Line

A direct MBTA train from Cedar Grove to Ashmont took a median 1.8 minutes across 123 observed trips; 90% of measured rides finished within approximately 13 minutes.

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

Typical1.8 min50th percentile
Slower trip13 min90th percentile
Scheduled1.2 minmedian timetable
On pace64%within 2 min of schedule

THE SHORT ANSWER

How long does Cedar Grove to Ashmont take?

The median completed ride from Cedar Grove to Ashmont was 1.8 minutes; the published schedule’s median was 1.2 minutes.

Based on 123 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 1.8 minutes. That was 0.5 minutes longer than the published schedule.

Nine out of ten measured trips finished within approximately 13 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.

WHEN YOU TRAVEL

Cedar Grove to Ashmont times by daypart

Evening rush produced the fastest median for Cedar Grove to Ashmont; Morning rush produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

3.2 min 35 trips · 51% on pace

Midday

1.2 min 20 trips · 55% on pace

Evening rush

1.2 min 25 trips · 76% on pace

Off-peak

1.2 min 43 trips · 72% on pace

MEASUREMENT SAMPLE

How Cedar Grove to Ashmont was measured

The Cedar Grove to Ashmont estimate uses 123 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 →