Chiltern Railways 631V51

View line Chiltern Railways

Mon, Tue, Wed, Thu, Fri Chiltern Railways

It does not run today

Last recorded run: Friday 23 October +3 min

Full trip card
The mini-map returns when the train runs
On-time ยท 30 days
90%
18/20 runs under 3 min
RT coverage: 20 full ยท 0 partial ยท 0 no data
On-time ยท 90 days
78%
49/63 runs under 3 min
RT coverage: 63 full ยท 0 partial ยท 0 no data
Typical delay
โˆ’1min
Median at arrival, 90 days
30 days: โˆ’2 min
P90
+7min
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

  • Mon 21 Sept Max en route +30 min ยท last fix heading to 70375 +30 min
  • Mon 7 Sept Max en route +20 min ยท last fix heading to Aylesbury Vale Parkway +20 min
  • Fri 28 Aug Max en route +17 min ยท last fix heading to Aylesbury Vale Parkway +17 min
  • Mon 14 Sept Max en route +14 min ยท last fix heading to Aylesbury Vale Parkway +10 min
  • Tue 13 Oct Max en route +11 min ยท last fix heading to Aylesbury Vale Parkway +7 min

Distribution ยท 90 days

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

  • Early 43% ยท 27
  • On time 35% ยท 22
  • 3โ€“10 min 16% ยท 10
  • 10โ€“30 min 5% ยท 3
  • 30+ min 2% ยท 1

On-time by weekday

  • 64% M n=11
  • 83% T n=12
  • 92% W n=13
  • 85% T n=13
  • 62% F n=13
  • 100% S n=1
  • โ€” S n=0

Recent runs

DateLast stopFinalMax
Fri 23 OctAylesbury Vale Parkway 18:40+3 min+9 min
Thu 22 OctAylesbury Vale Parkway 18:37โˆ’1 min+6 min
Wed 21 OctAylesbury Vale Parkway 18:35โˆ’2 min+3 min
Tue 20 OctAylesbury Vale Parkway 18:35โˆ’2 min+1 min
Mon 19 OctAylesbury Vale Parkway 18:35โˆ’2 min+3 min
Fri 16 OctAylesbury Vale Parkway 18:36โˆ’1 min+2 min
Thu 15 OctAylesbury Vale Parkway 18:370 min+5 min
Wed 14 OctAylesbury Vale Parkway 18:35โˆ’3 min+3 min
Tue 13 OctAylesbury Vale Parkway 18:44+7 min+11 min
Mon 12 OctAylesbury Vale Parkway 18:35โˆ’3 min+3 min
Fri 9 OctAylesbury Vale Parkway 18:39+2 min+4 min
Thu 8 OctAylesbury Vale Parkway 18:39+1 min+5 min
Wed 7 OctAylesbury Vale Parkway 18:35โˆ’2 min+2 min
Tue 6 OctAylesbury Vale Parkway 18:36โˆ’1 min+4 min
Mon 5 OctAylesbury Vale Parkway 18:36โˆ’1 min+3 min
Fri 2 OctAylesbury Vale Parkway 18:36โˆ’2 min+2 min
Thu 1 OctAylesbury Vale Parkway 18:35โˆ’2 min+2 min
Wed 30 SeptAylesbury Vale Parkway 18:35โˆ’2 min+4 min
Tue 29 SeptAylesbury Vale Parkway 18:35โˆ’2 min+1 min
Mon 28 SeptAylesbury Vale Parkway 18:36โˆ’2 min+3 min
Fri 25 SeptAylesbury Vale Parkway 18:37โˆ’1 min+3 min
Thu 24 SeptAylesbury Vale Parkway 18:37โˆ’1 min+5 min
Wed 23 SeptAylesbury Vale Parkway 18:42+3 min+8 min
Tue 22 SeptAylesbury Vale Parkway 18:40+2 min+5 min
Mon 21 Sept70375 18:22+30 min+30 min
Fri 18 SeptAylesbury Vale Parkway 18:35โˆ’3 min+2 min
Thu 17 SeptAylesbury Vale Parkway 18:45+7 min+10 min
Wed 16 SeptAylesbury Vale Parkway 18:36โˆ’3 min+3 min
Tue 15 SeptAylesbury Vale Parkway 18:35โˆ’3 min+2 min
Mon 14 SeptAylesbury Vale Parkway 18:49+10 min+14 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.