Morning rush
5.2 min 750 trips · 96% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Ball SquaretoEast Somerville
Green Line
A direct MBTA train from Ball Square to East Somerville took a median 4.8 minutes across 3,643 observed trips; 90% of measured rides finished within approximately 5.8 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical4.8 min50th percentile
Slower trip5.8 min90th percentile
Scheduled5.2 minmedian timetable
On pace97%within 2 min of schedule
THE SHORT ANSWER
How long does Ball Square to East Somerville take?
The median completed ride from Ball Square to East Somerville was 4.8 minutes; the published schedule’s median was 5.2 minutes.
Based on 3,643 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 4.8 minutes. That was within 0.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 5.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Ball Square to East Somerville times by daypart
Evening rush produced the fastest median for Ball Square to East Somerville; Morning rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
4.8 min 907 trips · 97% on paceEvening rush
4.8 min 713 trips · 97% on paceOff-peak
4.8 min 1,273 trips · 98% on paceMEASUREMENT SAMPLE
How Ball Square to East Somerville was measured
The Ball Square to East Somerville estimate uses 3,643 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 Ball Square
Trips related to Ball Square to East Somerville
The Ball Square to East Somerville record is accompanied by 6 other measured direct rides beginning at Ball Square, each with a published median duration.