Morning rush
5.8 min 569 trips · 96% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
Union SquaretoScience Park/West End
Green Line
A direct MBTA train from Union Square to Science Park/West End took a median 5.8 minutes across 3,219 observed trips; 90% of measured rides finished within approximately 7.2 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical5.8 min50th percentile
Slower trip7.2 min90th percentile
Scheduled7.2 minmedian timetable
On pace96%within 2 min of schedule
THE SHORT ANSWER
How long does Union Square to Science Park/West End take?
The median completed ride from Union Square to Science Park/West End was 5.8 minutes; the published schedule’s median was 7.2 minutes.
Based on 3,219 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 5.8 minutes. That was within 1.5 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 7.2 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Union Square to Science Park/West End times by daypart
Evening rush produced the fastest median for Union Square to Science Park/West End; Off-peak produced the slowest.
Differences can change as the rolling dataset updates.
Midday
5.8 min 845 trips · 96% on paceEvening rush
5.8 min 685 trips · 97% on paceOff-peak
5.8 min 1,120 trips · 97% on paceMEASUREMENT SAMPLE
How Union Square to Science Park/West End was measured
The Union Square to Science Park/West End estimate uses 3,219 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 Union Square
Trips related to Union Square to Science Park/West End
The Union Square to Science Park/West End record is accompanied by 6 other measured direct rides beginning at Union Square, each with a published median duration.