GWR 771L21
Alerts for train 771L21
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line GWR.
Running now · updated 14:18
Running now 0 min
Today it is running no worse than usual: typical arrival delay is +5 min; 38% of the last 21 runs arrived on time.
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
- Wed 14 Oct Max en route +69 min · last fix heading to Maidenhead +69 min
- Mon 26 Oct Max en route +59 min · last fix heading to Maidenhead +57 min
- Tue 6 Oct Max en route +28 min · last fix heading to Slough +25 min
- Thu 13 Aug Max en route +23 min · last fix heading to 73251 +23 min
- Thu 20 Aug Max en route +22 min · last fix heading to 73251 +22 min
Distribution · 90 days
58 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 2% · 1
- On time 45% · 26
- 3–10 min 29% · 17
- 10–30 min 21% · 12
- 30+ min 3% · 2
On-time by weekday
- 64% M n=11
- 45% T n=11
- 27% W n=11
- 54% T n=13
- 42% F n=12
- — S n=0
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 6 Nov | — 14:14 | −1 min | — |
| Thu 5 Nov | Maidenhead 15:44 | +1 min | +1 min |
| Wed 4 Nov | Maidenhead 15:44 | +1 min | +1 min |
| Tue 3 Nov | Maidenhead 15:53 | +9 min | +9 min |
| Fri 30 Oct | Maidenhead 15:57 | +5 min | +6 min |
| Thu 29 Oct | Slough 15:54 | +2 min | +3 min |
| Wed 28 Oct | Maidenhead 15:57 | +5 min | +5 min |
| Tue 27 Oct | Maidenhead 15:51 | −1 min | +1 min |
| Mon 26 Oct | Maidenhead 16:49 | +57 min | +59 min |
| Fri 23 Oct | Slough 16:09 | +17 min | +17 min |
| Thu 22 Oct | Slough 16:04 | +12 min | +12 min |
| Wed 21 Oct | Slough 15:55 | +3 min | +6 min |
| Tue 20 Oct | Slough 16:01 | +9 min | +9 min |
| Mon 19 Oct | Maidenhead 15:51 | −1 min | +5 min |
| Fri 16 Oct | Slough 15:53 | 0 min | +4 min |
| Thu 15 Oct | Slough 16:04 | +12 min | +12 min |
| Wed 14 Oct | Maidenhead 17:01 | +69 min | +69 min |
| Tue 13 Oct | Maidenhead 16:09 | +18 min | +21 min |
| Mon 12 Oct | Maidenhead 16:03 | +11 min | +11 min |
| Fri 9 Oct | Slough 16:01 | +9 min | +10 min |
| Thu 8 Oct | Slough 15:53 | +1 min | +4 min |
| Wed 7 Oct | Maidenhead 16:06 | +14 min | +14 min |
| Tue 6 Oct | Slough 16:17 | +25 min | +28 min |
| Mon 5 Oct | Patchway 15:48 | +1 min | +6 min |
| Fri 2 Oct | 73251 15:52 | 0 min | +2 min |
| Thu 1 Oct | 73251 15:51 | −1 min | +1 min |
| Wed 30 Sept | 73251 15:56 | +4 min | +4 min |
| Tue 29 Sept | 73251 15:57 | +5 min | +8 min |
| Mon 28 Sept | 73251 16:06 | +13 min | +14 min |
| Fri 25 Sept | 73251 16:02 | +9 min | +9 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.