GWR 731C21
View line GWR
Alerts for train 731C21
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.
The mini-map returns when the train runs
On-time · 30 days
52%
11/21 runs under 3 min
RT coverage: 21 full · 0 partial · 0 no data
On-time · 90 days
47%
32/68 runs under 3 min
RT coverage: 68 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+17min
9 in 10 runs arrive with less than this
30 days: +9 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
- Fri 14 Aug Max en route +35 min · last fix heading to 81606 +35 min
- Thu 13 Aug Max en route +27 min · last fix heading to 81606 +27 min
- Sat 24 Oct Max en route +23 min · last fix heading to Didcot Parkway +23 min
- Fri 23 Oct Max en route +23 min · last fix heading to Didcot Parkway +23 min
- Wed 12 Aug Max en route +23 min · last fix heading to 81606 +23 min
Distribution · 90 days
68 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 1% · 1
- On time 46% · 31
- 3–10 min 40% · 27
- 10–30 min 12% · 8
- 30+ min 1% · 1
On-time by weekday
- 58% M n=12
- 58% T n=12
- 30% W n=10
- 31% T n=13
- 50% F n=12
- 56% S n=9
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 29 Oct | Didcot Parkway 17:45 | +3 min | +4 min |
| Sat 24 Oct | Didcot Parkway 18:07 | +23 min | +23 min |
| Fri 23 Oct | Didcot Parkway 18:06 | +23 min | +23 min |
| Thu 22 Oct | Didcot Parkway 17:44 | +1 min | +1 min |
| Wed 21 Oct | Didcot Parkway 17:43 | +1 min | +2 min |
| Tue 20 Oct | Didcot Parkway 17:45 | +2 min | +2 min |
| Mon 19 Oct | Twyford 17:52 | +9 min | +11 min |
| Sat 17 Oct | Didcot Parkway 17:49 | +5 min | +5 min |
| Fri 16 Oct | Didcot Parkway 17:42 | 0 min | +2 min |
| Thu 15 Oct | Didcot Parkway 17:43 | +1 min | +3 min |
| Tue 13 Oct | Didcot Parkway 17:45 | +3 min | +4 min |
| Mon 12 Oct | Didcot Parkway 17:42 | 0 min | +2 min |
| Sat 10 Oct | Didcot Parkway 17:44 | 0 min | +1 min |
| Fri 9 Oct | Didcot Parkway 17:44 | +2 min | +3 min |
| Thu 8 Oct | Twyford 17:41 | −1 min | — |
| Wed 7 Oct | Didcot Parkway 17:47 | +5 min | +9 min |
| Tue 6 Oct | Didcot Parkway 17:47 | +5 min | +11 min |
| Mon 5 Oct | Didcot Parkway 17:42 | 0 min | +1 min |
| Sat 3 Oct | 81606 17:44 | 0 min | +1 min |
| Fri 2 Oct | 81606 17:51 | +8 min | +8 min |
| Thu 1 Oct | 81606 17:46 | +3 min | +7 min |
| Wed 30 Sept | 81606 17:50 | +8 min | +8 min |
| Tue 29 Sept | 81606 17:43 | +1 min | +3 min |
| Mon 28 Sept | 81606 17:43 | +1 min | +4 min |
| Sat 26 Sept | 81606 17:47 | +3 min | +14 min |
| Fri 25 Sept | 81606 17:43 | 0 min | +1 min |
| Thu 24 Sept | 81606 17:43 | +1 min | +1 min |
| Tue 22 Sept | 81606 17:44 | +2 min | +2 min |
| Mon 21 Sept | 81606 17:49 | +7 min | +7 min |
| Sat 19 Sept | 81606 17:44 | −1 min | +1 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.