Morning rush
27 min 640 trips · 94% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
CopleytoBall Square
Green Line
A direct MBTA train from Copley to Ball Square took a median 27 minutes across 3,542 observed trips; 90% of measured rides finished within approximately 32 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical27 min50th percentile
Slower trip32 min90th percentile
Scheduled30 minmedian timetable
On pace89%within 2 min of schedule
THE SHORT ANSWER
How long does Copley to Ball Square take?
The median completed ride from Copley to Ball Square was 27 minutes; the published schedule’s median was 30 minutes.
Based on 3,542 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 27 minutes. That was within 3 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 32 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Copley to Ball Square times by daypart
Off-peak produced the fastest median for Copley to Ball Square; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
27 min 898 trips · 91% on paceEvening rush
29 min 650 trips · 77% on paceOff-peak
26 min 1,354 trips · 92% on paceMEASUREMENT SAMPLE
How Copley to Ball Square was measured
The Copley to Ball Square estimate uses 3,542 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 Copley
Trips related to Copley to Ball Square
The Copley to Ball Square record is accompanied by 6 other measured direct rides beginning at Copley, each with a published median duration.