Morning rush
4.8 min 751 trips · 99% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
East SomervilletoBall Square
Green Line
A direct MBTA train from East Somerville to Ball Square took a median 4.8 minutes across 4,077 observed trips; 90% of measured rides finished within approximately 5.2 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical4.8 min50th percentile
Slower trip5.2 min90th percentile
Scheduled6.2 minmedian timetable
On pace99%within 2 min of schedule
THE SHORT ANSWER
How long does East Somerville to Ball Square take?
The median completed ride from East Somerville to Ball Square was 4.8 minutes; the published schedule’s median was 6.2 minutes.
Based on 4,077 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 4.8 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 5.2 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
East Somerville to Ball Square times by daypart
Evening rush produced the fastest median for East Somerville to Ball Square; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
4.8 min 958 trips · 99% on paceEvening rush
4.8 min 681 trips · 100% on paceOff-peak
4.8 min 1,687 trips · 100% on paceMEASUREMENT SAMPLE
How East Somerville to Ball Square was measured
The East Somerville to Ball Square estimate uses 4,077 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 East Somerville
Trips related to East Somerville to Ball Square
The East Somerville to Ball Square record is accompanied by 6 other measured direct rides beginning at East Somerville, each with a published median duration.