Chiltern Railways 631V51
View line Chiltern Railways
Alerts for train 631V51
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Chiltern Railways.
The mini-map returns when the train runs
On-time · 30 days
67%
14/21 runs under 3 min
RT coverage: 21 full · 0 partial · 0 no data
On-time · 90 days
73%
47/64 runs under 3 min
RT coverage: 64 full · 0 partial · 0 no data
Typical delay
−1min
Median at arrival, 90 days
30 days: 0 min
P90
+7min
9 in 10 runs arrive with less than this
30 days: +6 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
- Mon 21 Sept Max en route +30 min · last fix heading to 70375 +30 min
- Mon 7 Sept Max en route +20 min · last fix heading to Aylesbury Vale Parkway +20 min
- Fri 28 Aug Max en route +17 min · last fix heading to Aylesbury Vale Parkway +17 min
- Mon 14 Sept Max en route +14 min · last fix heading to Aylesbury Vale Parkway +10 min
- Mon 26 Oct Max en route +7 min · last fix heading to — +7 min
Distribution · 90 days
64 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 36% · 23
- On time 38% · 24
- 3–10 min 20% · 13
- 10–30 min 5% · 3
- 30+ min 2% · 1
On-time by weekday
- 58% M n=12
- 77% T n=13
- 92% W n=13
- 77% T n=13
- 58% F n=12
- 100% S n=1
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 5 Nov | Aylesbury Vale Parkway 18:33 | +4 min | +6 min |
| Wed 4 Nov | Aylesbury Vale Parkway 18:24 | −1 min | +1 min |
| Tue 3 Nov | Aylesbury Vale Parkway 18:34 | +4 min | +6 min |
| Mon 2 Nov | Aylesbury Vale Parkway 18:34 | +4 min | +8 min |
| Fri 30 Oct | Aylesbury Vale Parkway 18:44 | +6 min | +9 min |
| Thu 29 Oct | Aylesbury Vale Parkway 18:37 | −1 min | +2 min |
| Wed 28 Oct | Aylesbury Vale Parkway 18:38 | 0 min | +3 min |
| Tue 27 Oct | Aylesbury Vale Parkway 18:38 | 0 min | +4 min |
| Mon 26 Oct | — 17:57 | +7 min | +7 min |
| Fri 23 Oct | Aylesbury Vale Parkway 18:40 | +3 min | +9 min |
| Thu 22 Oct | Aylesbury Vale Parkway 18:37 | −1 min | +6 min |
| Wed 21 Oct | Aylesbury Vale Parkway 18:35 | −2 min | +3 min |
| Tue 20 Oct | Aylesbury Vale Parkway 18:35 | −2 min | +1 min |
| Mon 19 Oct | Aylesbury Vale Parkway 18:35 | −2 min | +3 min |
| Fri 16 Oct | Aylesbury Vale Parkway 18:36 | −1 min | +2 min |
| Thu 15 Oct | Aylesbury Vale Parkway 18:37 | 0 min | +5 min |
| Wed 14 Oct | Aylesbury Vale Parkway 18:35 | −3 min | +3 min |
| Tue 13 Oct | Aylesbury Vale Parkway 18:44 | +7 min | +11 min |
| Mon 12 Oct | Aylesbury Vale Parkway 18:35 | −3 min | +3 min |
| Fri 9 Oct | Aylesbury Vale Parkway 18:39 | +2 min | +4 min |
| Thu 8 Oct | Aylesbury Vale Parkway 18:39 | +1 min | +5 min |
| Wed 7 Oct | Aylesbury Vale Parkway 18:35 | −2 min | +2 min |
| Tue 6 Oct | Aylesbury Vale Parkway 18:36 | −1 min | +4 min |
| Mon 5 Oct | Aylesbury Vale Parkway 18:36 | −1 min | +3 min |
| Fri 2 Oct | Aylesbury Vale Parkway 18:36 | −2 min | +2 min |
| Thu 1 Oct | Aylesbury Vale Parkway 18:35 | −2 min | +2 min |
| Wed 30 Sept | Aylesbury Vale Parkway 18:35 | −2 min | +4 min |
| Tue 29 Sept | Aylesbury Vale Parkway 18:35 | −2 min | +1 min |
| Mon 28 Sept | Aylesbury Vale Parkway 18:36 | −2 min | +3 min |
| Fri 25 Sept | Aylesbury Vale Parkway 18:37 | −1 min | +3 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.