Morning rush
20 min 621 trips · 97% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Park StreettoBall Square
Green Line
A direct MBTA train from Park Street to Ball Square took a median 20 minutes across 3,554 observed trips; 90% of measured rides finished within approximately 23 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical20 min50th percentile
Slower trip23 min90th percentile
Scheduled23 minmedian timetable
On pace96%within 2 min of schedule
THE SHORT ANSWER
How long does Park Street to Ball Square take?
The median completed ride from Park Street to Ball Square was 20 minutes; the published schedule’s median was 23 minutes.
Based on 3,554 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 20 minutes. That was within 3.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 23 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Park Street to Ball Square times by daypart
Off-peak produced the fastest median for Park Street to Ball Square; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
20 min 899 trips · 96% on paceEvening rush
21 min 646 trips · 95% on paceOff-peak
19 min 1,388 trips · 95% on paceMEASUREMENT SAMPLE
How Park Street to Ball Square was measured
The Park Street to Ball Square estimate uses 3,554 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 Park Street
Trips related to Park Street to Ball Square
The Park Street to Ball Square record is accompanied by 6 other measured direct rides beginning at Park Street, each with a published median duration.