OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Longwood Medical AreatoBall Square

Green Line

A direct MBTA train from Longwood Medical Area to Ball Square took a median 38 minutes across 3,535 observed trips; 90% of measured rides finished within approximately 44 minutes.

Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only

Typical38 min50th percentile
Slower trip44 min90th percentile
Scheduled42 minmedian timetable
On pace89%within 2 min of schedule

THE SHORT ANSWER

How long does Longwood Medical Area to Ball Square take?

The median completed ride from Longwood Medical Area to Ball Square was 38 minutes; the published schedule’s median was 42 minutes.

Based on 3,535 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 38 minutes. That was within 4.5 minutes of the published schedule.

Nine out of ten measured trips finished within approximately 44 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.

WHEN YOU TRAVEL

Longwood Medical Area to Ball Square times by daypart

Off-peak produced the fastest median for Longwood Medical Area to Ball Square; Evening rush produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

37 min 650 trips · 94% on pace

Midday

38 min 893 trips · 91% on pace

Evening rush

41 min 684 trips · 79% on pace

Off-peak

36 min 1,308 trips · 91% on pace

MEASUREMENT SAMPLE

How Longwood Medical Area to Ball Square was measured

The Longwood Medical Area to Ball Square estimate uses 3,535 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 →