Chiltern Railways 631T35
View line Chiltern Railways
Alerts for train 631T35
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
69%
20/29 runs under 3 min
RT coverage: 29 full · 0 partial · 0 no data
On-time · 90 days
70%
61/87 runs under 3 min
RT coverage: 87 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: 0 min
P90
+7min
9 in 10 runs arrive with less than this
30 days: +7 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 21 Aug Max en route +19 min · last fix heading to 74425 +18 min
- Thu 24 Sept Max en route +10 min · last fix heading to 74425 +10 min
- Wed 14 Oct Max en route +12 min · last fix heading to Oxford Parkway +9 min
- Fri 18 Sept Max en route +10 min · last fix heading to 74425 +9 min
- Tue 4 Aug Max en route +9 min · last fix heading to 74425 +9 min
Distribution · 90 days
87 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 9% · 8
- On time 61% · 53
- 3–10 min 28% · 24
- 10–30 min 2% · 2
- 30+ min 0% · 0
On-time by weekday
- 83% M n=12
- 67% T n=12
- 54% W n=13
- 38% T n=13
- 62% F n=13
- 92% S n=12
- 100% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sun 25 Oct | Islip 15:17 | 0 min | +1 min |
| Sat 24 Oct | Oxford Parkway 15:14 | +2 min | +4 min |
| Fri 23 Oct | Oxford Parkway 15:08 | +1 min | +2 min |
| Thu 22 Oct | Oxford Parkway 15:08 | +1 min | +3 min |
| Wed 21 Oct | Oxford Parkway 15:10 | +3 min | +3 min |
| Tue 20 Oct | Oxford Parkway 15:07 | 0 min | +1 min |
| Mon 19 Oct | Oxford Parkway 15:07 | 0 min | +2 min |
| Sun 18 Oct | Islip 15:16 | −1 min | — |
| Sat 17 Oct | Oxford Parkway 15:10 | −1 min | — |
| Fri 16 Oct | Oxford Parkway 15:15 | +8 min | +12 min |
| Thu 15 Oct | Oxford Parkway 15:07 | 0 min | +1 min |
| Wed 14 Oct | Oxford Parkway 15:16 | +9 min | +12 min |
| Tue 13 Oct | Oxford Parkway 15:07 | 0 min | +1 min |
| Mon 12 Oct | Oxford Parkway 15:07 | 0 min | +1 min |
| Sun 11 Oct | Islip 15:17 | 0 min | +1 min |
| Sat 10 Oct | Oxford Parkway 15:11 | −1 min | — |
| Fri 9 Oct | Oxford Parkway 15:08 | +1 min | +2 min |
| Thu 8 Oct | Islip 15:10 | +3 min | +4 min |
| Wed 7 Oct | Oxford Parkway 15:10 | +3 min | +3 min |
| Tue 6 Oct | Oxford Parkway 15:15 | −3 min | +1 min |
| Mon 5 Oct | Oxford Parkway 15:09 | +2 min | +2 min |
| Sun 4 Oct | 74425 15:17 | 0 min | — |
| Sat 3 Oct | 74425 15:11 | −1 min | +1 min |
| Fri 2 Oct | 74425 15:12 | +5 min | +5 min |
| Thu 1 Oct | 74425 15:13 | +6 min | +6 min |
| Wed 30 Sept | 74425 15:14 | +7 min | +7 min |
| Tue 29 Sept | 74425 15:14 | +7 min | +7 min |
| Mon 28 Sept | 74425 15:07 | 0 min | +2 min |
| Sun 27 Sept | 74425 15:17 | 0 min | +1 min |
| Sat 26 Sept | 74425 15:11 | −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.