Chiltern Railways 661H31
View line Chiltern Railways
Alerts for train 661H31
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
29%
2/7 runs under 3 min
RT coverage: 7 full · 0 partial · 0 no data
On-time · 90 days
31%
5/16 runs under 3 min
RT coverage: 16 full · 0 partial · 0 no data
Typical delay
+5min
Median at arrival, 90 days
30 days: +5 min
P90
+18min
9 in 10 runs arrive with less than this
30 days: +11 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 22 Aug Max en route +62 min · last fix heading to 63018 +60 min
- Sat 5 Sept Max en route +21 min · last fix heading to 63018 +19 min
- Sat 29 Aug Max en route +17 min · last fix heading to 63018 +17 min
- Sat 3 Oct Max en route +13 min · last fix heading to 63018 +12 min
- Sat 26 Sept Max en route +11 min · last fix heading to 63018 +10 min
Distribution · 90 days
16 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 6% · 1
- On time 25% · 4
- 3–10 min 38% · 6
- 10–30 min 25% · 4
- 30+ min 6% · 1
On-time by weekday
- — M n=0
- — T n=0
- — W n=0
- — T n=0
- — F n=0
- 23% S n=13
- 67% S n=3
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 10 Oct | Wembley Stadium 11:58 | +5 min | +6 min |
| Sat 3 Oct | 63018 12:04 | +12 min | +13 min |
| Sat 26 Sept | 63018 12:03 | +10 min | +11 min |
| Sun 20 Sept | 63018 12:21 | +3 min | +4 min |
| Sat 19 Sept | 63018 11:59 | +5 min | +7 min |
| Sun 13 Sept | 69440 11:37 | −1 min | +2 min |
| Sat 12 Sept | 69440 11:07 | −1 min | +5 min |
| Sat 5 Sept | 63018 12:13 | +19 min | +21 min |
| Sat 29 Aug | 63018 12:11 | +17 min | +17 min |
| Sat 22 Aug | 63018 12:53 | +60 min | +62 min |
| Sat 15 Aug | 63018 12:01 | +8 min | +9 min |
| Sat 8 Aug | 63018 11:59 | +6 min | +7 min |
| Sat 1 Aug | 63018 11:55 | +2 min | +5 min |
| Sun 26 Jul | 63018 12:18 | −5 min | +1 min |
| Sat 25 Jul | 63018 11:55 | +2 min | +3 min |
| Sat 18 Jul | Gerrards Cross 12:31 | +5 min | +8 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.