South Western Railway 871D81
View line South Western Railway
Alerts for train 871D81
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line South Western Railway.
The mini-map returns when the train runs
On-time · 30 days
89%
8/9 runs under 3 min
RT coverage: 9 full · 0 partial · 0 no data
On-time · 90 days
61%
17/28 runs under 3 min
RT coverage: 28 full · 0 partial · 0 no data
Typical delay
+1min
Median at arrival, 90 days
30 days: −1 min
P90
+28min
9 in 10 runs arrive with less than this
30 days: +6 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 6 Sept Max en route +56 min · last fix heading to Ashtead +56 min
- Sat 8 Aug Max en route +38 min · last fix heading to Dorking +36 min
- Sat 1 Aug Max en route +32 min · last fix heading to Dorking +31 min
- Sat 10 Oct Max en route +29 min · last fix heading to Box Hill & Westhumble +26 min
- Sat 15 Aug Max en route +13 min · last fix heading to Dorking +12 min
Distribution · 90 days
28 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 14% · 4
- On time 46% · 13
- 3–10 min 21% · 6
- 10–30 min 7% · 2
- 30+ min 11% · 3
On-time by weekday
- 100% M n=1
- 100% T n=1
- — W n=0
- — T n=0
- — F n=0
- 38% S n=13
- 77% S n=13
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Tue 27 Oct | — 11:40 | +1 min | +1 min |
| Sun 25 Oct | Box Hill & Westhumble 01:28 | +1 min | +4 min |
| Sat 24 Oct | Dorking 01:26 | −1 min | +5 min |
| Sun 18 Oct | Dorking 01:26 | −1 min | +1 min |
| Sat 17 Oct | Dorking 01:27 | 0 min | +2 min |
| Sun 11 Oct | Dorking 01:26 | −1 min | — |
| Sat 10 Oct | Box Hill & Westhumble 01:53 | +26 min | +29 min |
| Sun 4 Oct | Dorking 01:24 | −3 min | — |
| Sat 3 Oct | Dorking 01:24 | −2 min | +1 min |
| Sun 27 Sept | Dorking 01:33 | +6 min | +7 min |
| Sat 26 Sept | Dorking 01:35 | +9 min | +10 min |
| Mon 21 Sept | — 10:10 | 0 min | — |
| Sun 20 Sept | Dorking 01:24 | −1 min | — |
| Sat 19 Sept | Dorking 01:27 | +1 min | +2 min |
| Sun 13 Sept | Wimbledon 00:50 | −2 min | — |
| Sat 12 Sept | Dorking 01:33 | +7 min | +7 min |
| Sun 6 Sept | Ashtead 02:06 | +56 min | +56 min |
| Sat 5 Sept | Dorking 01:35 | +9 min | +10 min |
| Sun 30 Aug | Dorking 01:26 | 0 min | +1 min |
| Sat 29 Aug | Dorking 01:29 | +3 min | +4 min |
| Sun 23 Aug | Wimbledon 00:58 | +6 min | +9 min |
| Sat 22 Aug | Dorking 01:24 | −1 min | +1 min |
| Sun 16 Aug | Wimbledon 00:50 | −2 min | — |
| Sat 15 Aug | Dorking 01:38 | +12 min | +13 min |
| Sun 9 Aug | Leatherhead 01:17 | −1 min | — |
| Sat 8 Aug | Dorking 02:02 | +36 min | +38 min |
| Sun 2 Aug | Leatherhead 01:18 | 0 min | +1 min |
| Sat 1 Aug | Dorking 01:57 | +31 min | +32 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.