Morning rush
45 min 467 trips · 90% on paceOBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS
ReservoirtoUnion Square
Green Line
A direct MBTA train from Reservoir to Union Square took a median 46 minutes across 2,446 observed trips; 90% of measured rides finished within approximately 53 minutes.
Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only
Typical46 min50th percentile
Slower trip53 min90th percentile
Scheduled49 minmedian timetable
On pace81%within 2 min of schedule
THE SHORT ANSWER
How long does Reservoir to Union Square take?
The median completed ride from Reservoir to Union Square was 46 minutes; the published schedule’s median was 49 minutes.
Based on 2,446 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 46 minutes. That was within 3 minutes of the published schedule.
Nine out of ten measured trips finished within approximately 53 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.
WHEN YOU TRAVEL
Reservoir to Union Square times by daypart
Off-peak produced the fastest median for Reservoir to Union Square; Evening rush produced the slowest.
Differences can change as the rolling dataset updates.
Midday
47 min 597 trips · 81% on paceEvening rush
48 min 496 trips · 72% on paceOff-peak
45 min 886 trips · 81% on paceMEASUREMENT SAMPLE
How Reservoir to Union Square was measured
The Reservoir to Union Square estimate uses 2,446 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 Reservoir
Trips related to Reservoir to Union Square
The Reservoir to Union Square record is accompanied by 6 other measured direct rides beginning at Reservoir, each with a published median duration.