Chiltern Railways 631N77
View line Chiltern Railways
Alerts for train 631N77
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.
โ Todayโs run finished
Today, last fix heading to Haddenham & Thame Parkway at 00:54 โ8 min
The mini-map returns when the train runs
On-time ยท 30 days
โ
Too little data (1/1 runs with data)
RT coverage: 1 full ยท 0 partial ยท 0 no data
On-time ยท 90 days
100%
8/8 runs under 3 min
RT coverage: 8 full ยท 0 partial ยท 0 no data
Typical delay
โ8min
Median at arrival, 90 days
P90
โ5min
9 in 10 runs arrive with less than this
Last 30 days
Delay at the end of each run, in minutes. One bar per run.
- On time (<3 min)
- 3โ10 min
- 10โ30 min
- 30+ min
- Partial coverage
- No data
Distribution ยท 90 days
8 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 100% ยท 8
- On time 0% ยท 0
- 3โ10 min 0% ยท 0
- 10โ30 min 0% ยท 0
- 30+ min 0% ยท 0
On-time by weekday
- โ M n=0
- 100% T n=3
- 100% W n=2
- 100% T n=2
- 100% F n=1
- โ S n=0
- โ S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 3 Nov | Haddenham & Thame Parkway 00:54 | โ8 min | +2 min |
| Thu 24 Sept | 74561 01:04 | โ5 min | +1 min |
| Wed 23 Sept | 74561 01:01 | โ9 min | โ |
| Tue 22 Sept | 74561 01:01 | โ9 min | โ |
| Fri 14 Aug | 74561 01:04 | โ6 min | +1 min |
| Thu 13 Aug | 74561 01:06 | โ4 min | +5 min |
| Wed 12 Aug | 74561 01:00 | โ9 min | โ |
| Tue 11 Aug | 74561 01:01 | โ8 min | โ |
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.