GWR 851A83

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Sat, Sun GWR

Running now · updated 13:02

Running now +2 min

Today it is running no worse than usual: typical arrival delay is +3 min; 44% of the last 9 runs arrived on time.

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On-time · 30 days
44%
4/9 runs under 3 min
RT coverage: 9 full · 0 partial · 0 no data
On-time · 90 days
23%
6/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
Typical delay
+12min
Median at arrival, 90 days
30 days: +3 min
P90
+38min
9 in 10 runs arrive with less than this
30 days: +22 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 16 Aug Max en route +61 min · last fix heading to 73251 +59 min
  • Sat 29 Aug Max en route +57 min · last fix heading to 74233 +56 min
  • Sat 15 Aug Max en route +41 min · last fix heading to 74233 +40 min
  • Sun 20 Sept Max en route +35 min · last fix heading to 73251 +35 min
  • Sun 13 Sept Max en route +35 min · last fix heading to 73251 +35 min

Distribution · 90 days

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

  • Early 4% · 1
  • On time 19% · 5
  • 3–10 min 23% · 6
  • 10–30 min 35% · 9
  • 30+ min 19% · 5

On-time by weekday

  • 100% M n=1
  • — T n=0
  • — W n=0
  • — T n=0
  • — F n=0
  • 25% S n=12
  • 15% S n=13

Recent runs

DateLast stopFinalMax
Sun 18 OctExeter St Davids 12:59+2 min+2 min
Sat 17 OctMaidenhead 15:40+3 min+8 min
Sun 11 OctSlough 16:06+19 min+19 min
Sun 4 Oct73251 15:35+3 min+7 min
Sat 3 Oct73251 15:35−2 min+2 min
Sun 27 Sept73251 16:48+2 min+21 min
Sat 26 Sept73251 15:370 min+5 min
Sun 20 Sept73251 16:07+35 min+35 min
Sat 19 Sept73251 15:44+7 min+13 min
Sun 13 Sept73251 16:07+35 min+35 min
Sat 12 Sept73251 15:47+5 min+8 min
Mon 7 Sept— 14:570 min—
Sun 6 Sept73251 15:58+26 min+26 min
Sat 5 Sept73251 15:41+3 min+4 min
Sun 30 Aug73251 15:45+15 min+17 min
Sat 29 Aug74233 16:03+56 min+57 min
Sun 23 Aug73251 15:44+14 min+14 min
Sat 22 Aug73251 15:49+11 min+19 min
Sun 16 Aug73251 16:29+59 min+61 min
Sat 15 Aug74233 18:04+40 min+41 min
Sun 9 Aug73251 15:38+8 min+11 min
Sat 8 Aug73251 15:36−1 min+1 min
Sun 2 Aug73251 15:57+20 min+24 min
Sat 1 Aug73251 15:58+21 min+25 min
Sun 26 Jul73251 15:42+12 min+12 min
Sat 25 Jul73251 15:54+17 min+17 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.