Chiltern Railways 631P51

View line Chiltern Railways

Tue, Wed, Thu Chiltern Railways

It does not run today

Last recorded run: Thursday 29 October +1 min

Full trip card
The mini-map returns when the train runs
On-time ยท 30 days
91%
10/11 runs under 3 min
RT coverage: 11 full ยท 0 partial ยท 0 no data
On-time ยท 90 days
88%
29/33 runs under 3 min
RT coverage: 33 full ยท 0 partial ยท 0 no data
Typical delay
โˆ’1min
Median at arrival, 90 days
30 days: โˆ’1 min
P90
+6min
9 in 10 runs arrive with less than this
30 days: +2 min

Last 30 days

Delay at the end of each run, in minutes. One bar per run.

  • On time (<3 min)
  • 3โ€“10 min
  • 10โ€“30 min
  • 30+ min
  • Partial coverage
  • No data

Worst days

  • Tue 8 Sept Max en route +20 min ยท last fix heading to Princes Risborough +18 min
  • Thu 24 Sept Max en route +11 min ยท last fix heading to Princes Risborough +11 min
  • Thu 8 Oct Max en route +9 min ยท last fix heading to Princes Risborough +8 min
  • Thu 27 Aug Max en route +7 min ยท last fix heading to Princes Risborough +7 min

Distribution ยท 90 days

33 runs with a known final delay. On time = under 3 min, the same cut the map uses.

  • Early 24% ยท 8
  • On time 64% ยท 21
  • 3โ€“10 min 6% ยท 2
  • 10โ€“30 min 6% ยท 2
  • 30+ min 0% ยท 0

On-time by weekday

  • โ€” M n=0
  • 90% T n=10
  • 100% W n=11
  • 75% T n=12
  • โ€” F n=0
  • โ€” S n=0
  • โ€” S n=0

Recent runs

DateLast stopFinalMax
Thu 29 OctPrinces Risborough 18:28+1 min+9 min
Wed 28 OctPrinces Risborough 18:25โˆ’2 minโ€”
Tue 27 OctPrinces Risborough 18:26โˆ’1 min+2 min
Thu 22 OctPrinces Risborough 18:25โˆ’1 min+2 min
Wed 21 OctPrinces Risborough 18:25โˆ’1 min+2 min
Tue 20 OctPrinces Risborough 18:28+1 min+1 min
Thu 15 OctPrinces Risborough 18:25โˆ’1 min+2 min
Wed 14 OctPrinces Risborough 18:27+1 min+3 min
Tue 13 OctSaunderton 18:29+2 min+3 min
Thu 8 OctPrinces Risborough 18:35+8 min+9 min
Wed 7 OctPrinces Risborough 18:25โˆ’2 min+1 min
Thu 1 OctPrinces Risborough 18:25โˆ’1 min+1 min
Wed 30 SeptPrinces Risborough 18:24โˆ’2 minโ€”
Thu 24 SeptPrinces Risborough 18:38+11 min+11 min
Wed 23 SeptPrinces Risborough 18:24โˆ’2 min+3 min
Tue 22 SeptPrinces Risborough 18:24โˆ’2 min+4 min
Thu 17 SeptPrinces Risborough 18:25โˆ’1 min+2 min
Wed 16 SeptPrinces Risborough 18:260 min+4 min
Tue 15 SeptPrinces Risborough 18:24โˆ’3 min+2 min
Thu 10 SeptPrinces Risborough 18:25โˆ’1 min+1 min
Tue 8 SeptPrinces Risborough 18:44+18 min+20 min
Thu 3 SeptPrinces Risborough 18:270 min+2 min
Wed 2 SeptPrinces Risborough 18:25โˆ’1 min+2 min
Tue 1 SeptPrinces Risborough 18:25โˆ’2 min+1 min
Thu 27 AugPrinces Risborough 18:34+7 min+7 min
Wed 26 AugPrinces Risborough 18:26โˆ’1 min+1 min
Tue 25 AugPrinces Risborough 18:25โˆ’1 min+1 min
Thu 20 AugPrinces Risborough 18:29+2 min+2 min
Wed 12 AugPrinces Risborough 18:28+1 min+1 min
Tue 11 AugPrinces Risborough 18:24โˆ’3 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.