GWR 671P12

View line GWR

Mon, Tue, Wed, Thu, Fri GWR

Running now · updated 07:27

Running now +2 min

Today it is running no worse than usual: typical arrival delay is +2 min; 52% of the last 21 runs arrived on time.

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On-time · 30 days

52%

11/21 runs under 3 min

RT coverage: 21 full · 0 partial · 0 no data

On-time · 90 days

52%

32/61 runs under 3 min

RT coverage: 61 full · 0 partial · 0 no data

Typical delay

+2min

Median at arrival, 90 days

30 days: +2 min

P90

+17min

9 in 10 runs arrive with less than this

30 days: +19 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

Tue 20 Oct Max en route +41 min · last fix heading to Slough +41 min
Fri 7 Aug Max en route +40 min · last fix heading to 73251 +37 min
Wed 16 Sept Max en route +29 min · last fix heading to 73251 +29 min
Thu 27 Aug Max en route +29 min · last fix heading to 73251 +25 min
Fri 25 Sept Max en route +20 min · last fix heading to 73251 +20 min

Distribution · 90 days

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

Early 0% · 0
On time 52% · 32
3–10 min 21% · 13
10–30 min 23% · 14
30+ min 3% · 2

On-time by weekday

54% M n=13
42% T n=12
42% W n=12
73% T n=11
54% F n=13
— S n=0
— S n=0

Recent runs

Date	Last stop	Final	Max
Wed 21 Oct	Kingham 07:24	+3 min	+3 min
Tue 20 Oct	Slough 09:33	+41 min	+41 min
Mon 19 Oct	Maidenhead 09:05	+13 min	+13 min
Fri 16 Oct	Maidenhead 08:54	+2 min	+6 min
Wed 14 Oct	Slough 08:54	+2 min	+5 min
Tue 13 Oct	Slough 08:54	+2 min	+4 min
Mon 12 Oct	Maidenhead 09:03	+11 min	+11 min
Fri 9 Oct	Slough 09:24	+1 min	+7 min
Thu 8 Oct	Maidenhead 08:58	+5 min	+5 min
Wed 7 Oct	Slough 08:55	+3 min	+4 min
Tue 6 Oct	Slough 08:54	+2 min	+4 min
Mon 5 Oct	73251 11:19	−1 min	+4 min
Fri 2 Oct	73251 08:52	0 min	+7 min
Thu 1 Oct	73251 08:54	+1 min	+2 min
Wed 30 Sept	73251 09:04	+12 min	+12 min
Tue 29 Sept	74449 15:00	+1 min	+6 min
Mon 28 Sept	73251 09:12	+19 min	+19 min
Fri 25 Sept	73251 09:13	+20 min	+20 min
Thu 24 Sept	73251 08:54	+1 min	+5 min
Wed 23 Sept	74444 10:33	+1 min	+1 min
Tue 22 Sept	73251 08:59	+7 min	+7 min
Mon 21 Sept	73251 12:33	0 min	+3 min
Fri 18 Sept	73251 09:09	+17 min	+19 min
Thu 17 Sept	73251 08:53	0 min	+3 min
Wed 16 Sept	73251 09:21	+29 min	+29 min
Tue 15 Sept	73251 08:56	+4 min	+8 min
Mon 14 Sept	74444 08:00	+1 min	+2 min
Fri 11 Sept	73251 10:51	0 min	+17 min
Thu 10 Sept	73251 09:38	0 min	+14 min
Tue 8 Sept	73251 08:53	+1 min	+6 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.