Chiltern Railways 631T52
View line Chiltern Railways
Alerts for train 631T52
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
76%
19/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
77%
57/74 runs under 3 min
RT coverage: 74 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: +1 min
P90
+6min
9 in 10 runs arrive with less than this
30 days: +4 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
- Wed 14 Oct Max en route +50 min · last fix heading to Oxford Parkway +50 min
- Fri 28 Aug Max en route +39 min · last fix heading to Islip +39 min
- Tue 8 Sept Max en route +18 min · last fix heading to 74425 +13 min
- Tue 29 Sept Max en route +13 min · last fix heading to 74425 +12 min
- Thu 6 Aug Max en route +11 min · last fix heading to 74425 +11 min
Distribution · 90 days
74 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 77% · 57
- 3–10 min 16% · 12
- 10–30 min 4% · 3
- 30+ min 3% · 2
On-time by weekday
- 83% M n=12
- 75% T n=12
- 92% W n=12
- 54% T n=13
- 77% F n=13
- — S n=0
- 83% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Mon 2 Nov | Oxford Parkway 19:10 | +3 min | +4 min |
| Sun 1 Nov | Oxford Parkway 19:09 | 0 min | +1 min |
| Fri 30 Oct | Oxford Parkway 19:15 | +1 min | +1 min |
| Thu 29 Oct | Oxford Parkway 19:18 | +4 min | +6 min |
| Wed 28 Oct | Oxford Parkway 19:15 | +1 min | +1 min |
| Tue 27 Oct | Oxford Parkway 19:17 | +2 min | +4 min |
| Mon 26 Oct | Islip 19:16 | +2 min | +2 min |
| Sun 25 Oct | Oxford Parkway 19:17 | 0 min | +1 min |
| Fri 23 Oct | Oxford Parkway 19:15 | +1 min | +5 min |
| Thu 22 Oct | Oxford Parkway 19:16 | +2 min | +3 min |
| Wed 21 Oct | Oxford Parkway 19:16 | +2 min | +5 min |
| Tue 20 Oct | Islip 19:15 | +1 min | +1 min |
| Mon 19 Oct | Oxford Parkway 19:17 | +3 min | +3 min |
| Sun 18 Oct | Oxford Parkway 19:17 | 0 min | — |
| Fri 16 Oct | Oxford Parkway 19:14 | +1 min | +1 min |
| Thu 15 Oct | Oxford Parkway 19:15 | +1 min | +1 min |
| Wed 14 Oct | Oxford Parkway 20:04 | +50 min | +50 min |
| Tue 13 Oct | Oxford Parkway 19:18 | +4 min | +4 min |
| Mon 12 Oct | Oxford Parkway 19:15 | 0 min | +1 min |
| Sun 11 Oct | Oxford Parkway 19:17 | 0 min | — |
| Fri 9 Oct | Oxford Parkway 19:15 | +1 min | +4 min |
| Thu 8 Oct | Oxford Parkway 19:20 | +6 min | +6 min |
| Wed 7 Oct | Oxford Parkway 19:14 | 0 min | +1 min |
| Tue 6 Oct | Oxford Parkway 19:14 | 0 min | +1 min |
| Mon 5 Oct | Oxford Parkway 19:14 | 0 min | — |
| Sun 4 Oct | 74425 19:17 | 0 min | +5 min |
| Fri 2 Oct | 74425 19:14 | 0 min | +1 min |
| Thu 1 Oct | 74425 19:15 | +1 min | +1 min |
| Wed 30 Sept | 74425 19:14 | 0 min | +1 min |
| Tue 29 Sept | 74425 19:26 | +12 min | +13 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.