OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Chiswick RoadtoSouth Street

Green Line

A direct MBTA train from Chiswick Road to South Street took a median 2.8 minutes across 3,435 observed trips; 90% of measured rides finished within approximately 3.8 minutes.

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

Typical2.8 min50th percentile
Slower trip3.8 min90th percentile
Scheduled4.2 minmedian timetable
On pace100%within 2 min of schedule

THE SHORT ANSWER

How long does Chiswick Road to South Street take?

The median completed ride from Chiswick Road to South Street was 2.8 minutes; the published schedule’s median was 4.2 minutes.

Based on 3,435 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 2.8 minutes. That was within 1.5 minutes of the published schedule.

Nine out of ten measured trips finished within approximately 3.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.

WHEN YOU TRAVEL

Chiswick Road to South Street times by daypart

Evening rush produced the fastest median for Chiswick Road to South Street; Off-peak produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

2.8 min 579 trips · 99% on pace

Midday

2.8 min 891 trips · 100% on pace

Evening rush

2.8 min 668 trips · 100% on pace

Off-peak

2.8 min 1,297 trips · 100% on pace

MEASUREMENT SAMPLE

How Chiswick Road to South Street was measured

The Chiswick Road to South Street estimate uses 3,435 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 →