Chiltern Railways 661H66
View line Chiltern Railways
Alerts for train 661H66
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
50%
15/30 runs under 3 min
RT coverage: 30 full · 0 partial · 0 no data
On-time · 90 days
42%
37/89 runs under 3 min
RT coverage: 89 full · 0 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +3 min
P90
+18min
9 in 10 runs arrive with less than this
30 days: +9 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
- Sun 2 Aug Max en route +62 min · last fix heading to 63018 +52 min
- Fri 21 Aug Max en route +42 min · last fix heading to 74561 +42 min
- Thu 13 Aug Max en route +45 min · last fix heading to 63018 +42 min
- Tue 29 Sept Max en route +40 min · last fix heading to 63018 +40 min
- Fri 11 Sept Max en route +34 min · last fix heading to 63018 +30 min
Distribution · 90 days
89 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 2% · 2
- On time 39% · 35
- 3–10 min 42% · 37
- 10–30 min 11% · 10
- 30+ min 6% · 5
On-time by weekday
- 58% M n=12
- 38% T n=13
- 38% W n=13
- 23% T n=13
- 46% F n=13
- 62% S n=13
- 25% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 24 Oct | Wembley Stadium 18:56 | +2 min | +2 min |
| Fri 23 Oct | South Ruislip 18:54 | +2 min | +2 min |
| Thu 22 Oct | West Ruislip 18:53 | +1 min | +4 min |
| Wed 21 Oct | West Ruislip 18:53 | +1 min | +3 min |
| Tue 20 Oct | Wembley Stadium 18:58 | +6 min | +9 min |
| Mon 19 Oct | Wembley Stadium 18:56 | +3 min | +5 min |
| Sun 18 Oct | West Ruislip 19:07 | +3 min | +6 min |
| Sat 17 Oct | Wembley Stadium 18:54 | +1 min | +2 min |
| Fri 16 Oct | Wembley Stadium 18:52 | 0 min | +3 min |
| Thu 15 Oct | Wembley Stadium 18:57 | +5 min | +7 min |
| Wed 14 Oct | Wembley Stadium 18:57 | +5 min | +8 min |
| Tue 13 Oct | Wembley Stadium 18:58 | +5 min | +9 min |
| Mon 12 Oct | Wembley Stadium 18:55 | +3 min | +5 min |
| Sun 11 Oct | Wembley Stadium 19:07 | +12 min | +12 min |
| Sat 10 Oct | Wembley Stadium 18:58 | +2 min | +3 min |
| Fri 9 Oct | Wembley Stadium 18:54 | +1 min | +4 min |
| Thu 8 Oct | Wembley Stadium 19:01 | +9 min | +13 min |
| Wed 7 Oct | Wembley Stadium 18:54 | +2 min | +5 min |
| Tue 6 Oct | Wembley Stadium 19:04 | +1 min | +3 min |
| Mon 5 Oct | Wembley Stadium 18:53 | +1 min | +4 min |
| Sun 4 Oct | 63018 19:04 | +8 min | +10 min |
| Sat 3 Oct | 63018 18:57 | +4 min | +6 min |
| Fri 2 Oct | 63018 19:11 | +19 min | +19 min |
| Thu 1 Oct | 63018 18:53 | +1 min | +4 min |
| Wed 30 Sept | 63018 18:55 | +3 min | +6 min |
| Tue 29 Sept | 63018 19:33 | +40 min | +40 min |
| Mon 28 Sept | 63018 18:53 | +1 min | +5 min |
| Sun 27 Sept | 63018 19:02 | +6 min | +8 min |
| Sat 26 Sept | 63018 19:01 | 0 min | +3 min |
| Fri 25 Sept | 63018 18:54 | +2 min | +5 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.