Trackside
MBTA Commuter Rail Fitchburg Early data — logging since Aug 2026

Fitchburg Line — this week

How reliably Fitchburg Line trains ran this week, by day. Worst day this week: Thu 9/10, only 34% on time, typically 3 min late, worse-run trains ~6 min late.

Tue 9/8 Wed 9/9 Thu 9/10 Fri 9/11 Sat 9/12 Sun 9/13
Inbound 49% 40% 27% 34% 44% 22%
Outbound 46% 37% 41% 41% 70% 72%

The number in each cell is the share of trains on time that day — higher is better. The background colour grades that same number, so each row reads at a glance.

Tap or hover a day for the typical minutes late, how late the worse-running trains ran, and the train/arrival counts behind it.

Where delay builds

Typical delay along the route, across all recent weekdays — not just this week.

Inbound

15mWachusett: usually on timeFitchburg: usually 2 min lateNorth Leominster: usually 3 min lateShirley: usually 3 min lateAyer: usually 3 min lateLittleton/Route 495: usually 3 min lateSouth Acton: usually 3 min lateWest Concord: usually 4 min lateConcord: usually 4 min lateLincoln: usually 3 min lateKendal Green: usually 3 min lateSilver Hill: usually 6 min lateBrandeis/Roberts: usually 3 min lateWaltham: usually 3 min lateWaverley: usually 2 min lateBelmont: usually 3 min latePorter: usually 2 min lateNorth Station: usually on time+6WachusettNorth Station

Outbound

10mNorth Station: usually on timePorter: usually on timeBelmont: usually on timeWaverley: usually 2 min lateWaltham: usually 2 min lateBrandeis/Roberts: usually 3 min lateKendal Green: usually 2 min lateSilver Hill: usually 3 min lateLincoln: usually 3 min lateConcord: usually 3 min lateWest Concord: usually 3 min lateSouth Acton: usually 4 min lateLittleton/Route 495: usually 2 min lateLittleton/Route 495: usually 2 min lateAyer: usually 4 min lateShirley: usually 4 min lateNorth Leominster: usually 4 min lateFitchburg: usually 4 min lateWachusett: usually 2 min late+4North StationWachusett

Have an iPhone? Trackside’s app does live train tracking and arrival alerts for MARC today — MBTA Commuter Rail support is on the way.

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