Morning rush
48 min 622 trips · 89% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Heath StreettoBall Square
Green Line
A direct MBTA train from Heath Street to Ball Square took a median 48 minutes across 3,237 observed trips; 90% of measured rides finished within approximately 56 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical48 min50th percentile
Slower trip56 min90th percentile
Scheduled51 minmedian timetable
On pace80%within 2 min of schedule
THE SHORT ANSWER
How long does Heath Street to Ball Square take?
The median completed ride from Heath Street to Ball Square was 48 minutes; the published schedule’s median was 51 minutes.
Based on 3,237 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 48 minutes. That was within 3 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 56 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Heath Street to Ball Square times by daypart
Off-peak produced the fastest median for Heath Street to Ball Square; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
49 min 785 trips · 81% on paceEvening rush
53 min 625 trips · 61% on paceOff-peak
45 min 1,205 trips · 83% on paceMEASUREMENT SAMPLE
How Heath Street to Ball Square was measured
The Heath Street to Ball Square estimate uses 3,237 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 Heath Street
Trips related to Heath Street to Ball Square
The Heath Street to Ball Square record is accompanied by 6 other measured direct rides beginning at Heath Street, each with a published median duration.