Morning rush
20 min 619 trips · 96% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Park StreettoBall Square
Green Line
A direct train took 20 minutes on a typical trip. On a slower-than-usual trip, allow up to 23 minutes.
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?
Based on 3,523 direct trips between 2026-08-17 and 2026-09-15, 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
Time-of-day breakdown
Off-peak produced the fastest typical result in this window; Evening rush was slowest. Differences can change as the rolling dataset updates.
Midday
20 min 889 trips · 97% on paceEvening rush
21 min 638 trips · 95% on paceOff-peak
19 min 1,377 trips · 95% on paceHOW TO READ THIS
Measured, not promised.
TransitMeter pairs vehicle stop timestamps with the schedule active for each trip. 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