OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Ball SquaretoLechmere

Green Line

A direct MBTA train from Ball Square to Lechmere took a median 8.8 minutes across 3,598 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

Typical8.8 min50th percentile
Slower trip11 min90th percentile
Scheduled9.2 minmedian timetable
On pace93%within 2 min of schedule

THE SHORT ANSWER

How long does Ball Square to Lechmere take?

The median completed ride from Ball Square to Lechmere was 8.8 minutes; the published schedule’s median was 9.2 minutes.

Based on 3,598 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 8.8 minutes. That was within 0.5 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

Ball Square to Lechmere times by daypart

Off-peak produced the fastest median for Ball Square to Lechmere; Morning rush produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

8.8 min 743 trips · 92% on pace

Midday

8.8 min 905 trips · 94% on pace

Evening rush

8.8 min 708 trips · 92% on pace

Off-peak

8.2 min 1,242 trips · 93% on pace

MEASUREMENT SAMPLE

How Ball Square to Lechmere was measured

The Ball Square to Lechmere estimate uses 3,598 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 →