GWR 851A90

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Sun GWR

Running now · updated 19:11

Running now +4 min

Today it is running no worse than usual: typical arrival delay is +18 min; 20% of the last 5 runs arrived on time.

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On-time · 30 days
20%
1/5 runs under 3 min
RT coverage: 5 full · 0 partial · 0 no data
On-time · 90 days
22%
4/18 runs under 3 min
RT coverage: 18 full · 0 partial · 0 no data
Typical delay
+25min
Median at arrival, 90 days
30 days: +18 min
P90
+53min
9 in 10 runs arrive with less than this
30 days: +25 min

Last 30 days

Delay at the end of each run, in minutes. One bar per run.

  • On time (<3 min)
  • 3–10 min
  • 10–30 min
  • 30+ min
  • Partial coverage
  • No data

Worst days

  • Sun 30 Aug Max en route +70 min · last fix heading to 73251 +63 min
  • Sat 15 Aug Max en route +61 min · last fix heading to 73251 +59 min
  • Sat 5 Sept Max en route +50 min · last fix heading to 74233 +50 min
  • Sun 4 Oct Max en route +38 min · last fix heading to 73251 +38 min
  • Sat 22 Aug Max en route +35 min · last fix heading to 73251 +35 min

Distribution · 90 days

18 runs with a known final delay. On time = under 3 min, the same cut the map uses.

  • Early 6% · 1
  • On time 17% · 3
  • 3–10 min 17% · 3
  • 10–30 min 22% · 4
  • 30+ min 39% · 7

On-time by weekday

  • — M n=0
  • — T n=0
  • — W n=0
  • — T n=0
  • — F n=0
  • 40% S n=5
  • 15% S n=13

Recent runs

DateLast stopFinalMax
Sun 8 NovMaidenhead 19:09+6 min+6 min
Sun 1 NovMaidenhead 19:52+23 min+23 min
Sun 25 OctMaidenhead 19:58+26 min+26 min
Sun 18 OctMaidenhead 19:55+18 min+18 min
Sun 11 OctSlough 20:040 min+6 min
Sun 4 Oct73251 20:10+38 min+38 min
Sun 27 Sept73251 20:24+5 min+5 min
Sun 20 Sept84135 16:21+3 min+3 min
Sun 13 Sept73251 20:07+34 min+34 min
Sat 12 Sept73251 18:40−2 min+2 min
Sun 6 Sept73251 20:00+27 min+27 min
Sat 5 Sept74233 18:57+50 min+50 min
Sun 30 Aug73251 20:36+63 min+70 min
Sat 29 Aug73251 18:34+1 min+6 min
Sun 23 Aug73251 20:03+30 min+31 min
Sat 22 Aug73251 19:08+35 min+35 min
Sun 16 Aug73251 19:330 min+3 min
Sat 15 Aug73251 19:32+59 min+61 min

Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.