Chiltern Railways 661H77
View line Chiltern Railways
Alerts for train 661H77
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
72%
18/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
70%
53/76 runs under 3 min
RT coverage: 76 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +1 min
P90
+10min
9 in 10 runs arrive with less than this
30 days: +10 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
- Sat 29 Aug Max en route +22 min · last fix heading to 63018 +22 min
- Thu 27 Aug Max en route +24 min · last fix heading to 63018 +21 min
- Fri 14 Aug Max en route +19 min · last fix heading to 63018 +19 min
- Wed 14 Oct Max en route +14 min · last fix heading to Wembley Stadium +13 min
- Sat 19 Sept Max en route +15 min · last fix heading to 63018 +13 min
Distribution · 90 days
76 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 3% · 2
- On time 67% · 51
- 3–10 min 20% · 15
- 10–30 min 11% · 8
- 30+ min 0% · 0
On-time by weekday
- 77% M n=13
- 92% T n=13
- 67% W n=12
- 75% T n=12
- 54% F n=13
- 50% S n=12
- 100% S n=1
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 3 Nov | South Ruislip 21:39 | +10 min | +11 min |
| Mon 2 Nov | West Ruislip 21:29 | 0 min | +2 min |
| Sat 31 Oct | Wembley Stadium 21:32 | +9 min | +9 min |
| Fri 30 Oct | Wembley Stadium 21:44 | +6 min | +9 min |
| Thu 29 Oct | Wembley Stadium 21:41 | +2 min | +6 min |
| Wed 28 Oct | Wembley Stadium 21:38 | 0 min | +2 min |
| Tue 27 Oct | Wembley Stadium 21:39 | 0 min | +4 min |
| Mon 26 Oct | Wembley Stadium 21:40 | +2 min | +5 min |
| Sat 24 Oct | Wembley Stadium 21:33 | +10 min | +10 min |
| Fri 23 Oct | Wembley Stadium 21:41 | +2 min | +6 min |
| Thu 22 Oct | West Ruislip 21:38 | 0 min | +3 min |
| Wed 21 Oct | Wembley Stadium 21:47 | +8 min | +9 min |
| Tue 20 Oct | South Ruislip 21:38 | 0 min | +2 min |
| Mon 19 Oct | Wembley Stadium 21:41 | +2 min | +3 min |
| Sat 17 Oct | Wembley Stadium 21:23 | 0 min | +2 min |
| Fri 16 Oct | Wembley Stadium 21:42 | +3 min | +6 min |
| Thu 15 Oct | Wembley Stadium 21:37 | −1 min | +3 min |
| Wed 14 Oct | Wembley Stadium 21:51 | +13 min | +14 min |
| Tue 13 Oct | Wembley Stadium 21:39 | +1 min | +3 min |
| Mon 12 Oct | Wembley Stadium 21:38 | 0 min | +3 min |
| Sat 10 Oct | Wembley Stadium 21:33 | +2 min | +3 min |
| Fri 9 Oct | Wembley Stadium 21:38 | 0 min | +3 min |
| Thu 8 Oct | Wembley Stadium 21:39 | +1 min | +4 min |
| Wed 7 Oct | Wembley Stadium 21:39 | 0 min | +4 min |
| Tue 6 Oct | Wembley Stadium 21:39 | +1 min | +4 min |
| Mon 5 Oct | Wembley Stadium 21:38 | −1 min | +3 min |
| Sat 3 Oct | 63018 21:17 | +2 min | +4 min |
| Fri 2 Oct | 63018 21:44 | +6 min | +10 min |
| Thu 1 Oct | 63018 21:41 | +3 min | +6 min |
| Wed 30 Sept | 63018 21:43 | +5 min | +10 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.