Chiltern Railways 661H27
View line Chiltern Railways
Alerts for train 661H27
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
62%
16/26 runs under 3 min
RT coverage: 26 full · 0 partial · 0 no data
On-time · 90 days
59%
47/79 runs under 3 min
RT coverage: 79 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: +2 min
P90
+13min
9 in 10 runs arrive with less than this
30 days: +12 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
- Wed 12 Aug Max en route +51 min · last fix heading to 63018 +51 min
- Tue 15 Sept Max en route +27 min · last fix heading to 63018 +27 min
- Mon 26 Oct Max en route +16 min · last fix heading to South Ruislip +15 min
- Fri 25 Sept Max en route +16 min · last fix heading to 63018 +15 min
- Tue 27 Oct Max en route +17 min · last fix heading to South Ruislip +14 min
Distribution · 90 days
79 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 20% · 16
- On time 39% · 31
- 3–10 min 25% · 20
- 10–30 min 14% · 11
- 30+ min 1% · 1
On-time by weekday
- 77% M n=13
- 69% T n=13
- 54% W n=13
- 75% T n=12
- 46% F n=13
- 100% S n=3
- 25% S n=12
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 6 Nov | West Ruislip 10:44 | −2 min | +5 min |
| Thu 5 Nov | Wembley Stadium 10:43 | −2 min | +2 min |
| Wed 4 Nov | Wembley Stadium 10:44 | −2 min | +4 min |
| Tue 3 Nov | Wembley Stadium 10:44 | +1 min | +2 min |
| Mon 2 Nov | Wembley Stadium 10:43 | −2 min | +3 min |
| Sun 1 Nov | Wembley Stadium 11:06 | +6 min | +7 min |
| Fri 30 Oct | South Ruislip 11:02 | +9 min | +12 min |
| Wed 28 Oct | South Ruislip 10:58 | +4 min | +9 min |
| Tue 27 Oct | South Ruislip 11:07 | +14 min | +17 min |
| Mon 26 Oct | South Ruislip 11:08 | +15 min | +16 min |
| Sun 25 Oct | South Ruislip 11:07 | +3 min | +7 min |
| Fri 23 Oct | South Ruislip 10:53 | −1 min | +5 min |
| Thu 22 Oct | South Ruislip 10:54 | +1 min | +4 min |
| Wed 21 Oct | Wembley Stadium 11:02 | +9 min | +9 min |
| Tue 20 Oct | South Ruislip 10:53 | 0 min | +5 min |
| Mon 19 Oct | Wembley Stadium 10:55 | +2 min | +4 min |
| Sun 18 Oct | West Ruislip 11:03 | +2 min | +4 min |
| Sat 17 Oct | Wembley Stadium 10:52 | −2 min | +1 min |
| Fri 16 Oct | Wembley Stadium 10:58 | +5 min | +8 min |
| Thu 15 Oct | Wembley Stadium 10:56 | +2 min | +8 min |
| Wed 14 Oct | Wembley Stadium 10:52 | −1 min | +5 min |
| Tue 13 Oct | Wembley Stadium 11:07 | +14 min | +17 min |
| Mon 12 Oct | Wembley Stadium 10:52 | −1 min | +2 min |
| Sun 11 Oct | Wembley Stadium 11:09 | +9 min | +11 min |
| Sat 10 Oct | Wembley Stadium 10:53 | 0 min | +3 min |
| Fri 9 Oct | Wembley Stadium 10:52 | −2 min | +4 min |
| Thu 8 Oct | Wembley Stadium 11:01 | +7 min | +13 min |
| Wed 7 Oct | Wembley Stadium 10:53 | −1 min | +2 min |
| Tue 6 Oct | Wembley Stadium 10:52 | −1 min | +5 min |
| Mon 5 Oct | 63018 10:52 | −1 min | +2 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.