81013 1A83 0813 Northampton – Euston 11vb 030585
| Milepost/Station | Sched arr/dep | Actual arr/dep | Passing time | variance | Av speed |
| 40.21 – Leighton Buzzard | 0846 dep | 0848.07 | +2 | ——— | |
| 40 | 0849.03 | 13.5 | |||
| 39 | 0850.58 | 32.72 | |||
| 38 | 0852.59 | 29.75 | |||
| 37 | 0854.09 | 51.42 | |||
| 36 – Cheddington | 0855.00 | 70.58 | |||
| 35 | 0855.47 | 76.59 | |||
| 34 | 0856.36 | 73.46 | |||
| 33 | 0858.06 | 40 | |||
| 32 | 0902.30 | 22.6 | |||
| 31 – Tring | 0904.56 | 24.65 | |||
| 30 | 0906.04 | 52.94 | |||
| 28.5 | 0907.15 | 78.26 | |||
| 28 – Berkhampsted | 0907.35 | 90 | |||
| 27 | 0908.15 | 90 | |||
| 26 | 0908.53 | 94.7 | |||
| 25 | 0909.32 | 92.3 | |||
| 24 – Hemel Hempstead | 0910.10 | 94.7 | |||
| 23 – Apsley | 0910.47 | 97.2 | |||
| 22 | 0911.24 | 97.2 | |||
| 21 – Kings Langley | 0912.00 | 100 | |||
| 20 | 0912.37 | 97.2 | |||
| 18 | 0913.51 | 97.2 | |||
| 17 – Watford Jn | 0914.27 | 100 | |||
| 15.75 – Bushey | 0915.13 | 97.82 | |||
| 15 | 0915.40 | 100 | |||
| 14 | 0916.16 | 100 | |||
| 13 | 0916.50 | 105.86 | |||
| 12 | 0917.26 | 100 | |||
| 11 – Harrow | 0918.00 | 105.88 | |||
| 9 | 0919.10 | 102.85 | |||
| 8 – Wembley C | 0919.45 | 102.55 | |||
| 6.75 | 0920.31 | 97.82 | |||
| 6 | 0921.00 | 93.1 | |||
| 5 | 0921.40 | 90 | |||
| 4 | 0922.23 | 83.72 | |||
| 3 | 0923.07 | 90 | |||
| 1 | 0925.40 | 47.05 | |||
| 0 – Euston | 0923 arr | 0928.10 arr | +5 | 24 |