Chiltern Railways 631U77
View line Chiltern Railways
Alerts for train 631U77
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.
✓ Today’s run finished
Today, last fix heading to Haddenham & Thame Parkway at 01:31 0 min
The mini-map returns when the train runs
On-time · 30 days
88%
23/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
76%
58/76 runs under 3 min
RT coverage: 76 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: 0 min
P90
+14min
9 in 10 runs arrive with less than this
30 days: +3 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
- Thu 27 Aug Max en route +55 min · last fix heading to 69416 +53 min
- Fri 31 Jul Max en route +40 min · last fix heading to 69416 +38 min
- Mon 17 Aug Max en route +34 min · last fix heading to 69416 +30 min
- Sat 25 Jul Max en route +23 min · last fix heading to 69416 +23 min
- Wed 7 Oct Max en route +22 min · last fix heading to Haddenham & Thame Parkway +21 min
Distribution · 90 days
76 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 9% · 7
- On time 67% · 51
- 3–10 min 12% · 9
- 10–30 min 8% · 6
- 30+ min 4% · 3
On-time by weekday
- 75% M n=12
- 100% T n=13
- 92% W n=13
- 69% T n=13
- 50% F n=12
- 69% S n=13
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Thu 15 Oct | Haddenham & Thame Parkway 01:31 | 0 min | +1 min |
| Wed 14 Oct | Haddenham & Thame Parkway 01:31 | 0 min | +1 min |
| Tue 13 Oct | Haddenham & Thame Parkway 01:30 | −1 min | — |
| Mon 12 Oct | Haddenham & Thame Parkway 01:32 | 0 min | +1 min |
| Sat 10 Oct | Haddenham & Thame Parkway 01:33 | −1 min | +1 min |
| Fri 9 Oct | Haddenham & Thame Parkway 01:33 | +1 min | +2 min |
| Thu 8 Oct | Haddenham & Thame Parkway 01:30 | −1 min | — |
| Wed 7 Oct | Haddenham & Thame Parkway 01:56 | +21 min | +22 min |
| Tue 6 Oct | Haddenham & Thame Parkway 01:30 | −1 min | — |
| Mon 5 Oct | 69416 01:32 | 0 min | — |
| Sat 3 Oct | 69416 01:31 | −3 min | +2 min |
| Fri 2 Oct | 69416 01:55 | 0 min | — |
| Thu 1 Oct | 69416 01:54 | 0 min | — |
| Wed 30 Sept | 69416 01:30 | −1 min | — |
| Tue 29 Sept | 69416 01:31 | 0 min | +1 min |
| Mon 28 Sept | 69416 01:32 | 0 min | +1 min |
| Sat 26 Sept | 69416 01:30 | −4 min | +1 min |
| Fri 25 Sept | 69416 01:32 | +1 min | +2 min |
| Thu 24 Sept | 69416 01:30 | −1 min | +1 min |
| Wed 23 Sept | 69416 01:30 | 0 min | — |
| Tue 22 Sept | 69416 01:31 | −1 min | +1 min |
| Mon 21 Sept | 69440 01:28 | −1 min | +1 min |
| Sat 19 Sept | 69416 01:30 | −3 min | — |
| Fri 18 Sept | 69416 01:38 | +7 min | +8 min |
| Thu 17 Sept | 69416 01:36 | +5 min | +8 min |
| Wed 16 Sept | 69416 01:30 | −1 min | +1 min |
| Tue 15 Sept | 69416 01:30 | −1 min | +1 min |
| Sat 12 Sept | 69416 01:50 | +16 min | +20 min |
| Fri 11 Sept | 69416 01:36 | +5 min | +6 min |
| Thu 10 Sept | 69416 01:37 | +3 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.