I have imposed on myself a rule to the effect that an ascent is proportionately related to the difference between 500ft and the actual vertical height covered. For a 0ft ascent I've set an (admittedly arbitrary) upper limit of 3.5 miles. So one gets this table:
| Vertical Height (feet) | Minimum Walking Distance (miles) |
| 0 | 3.5 |
| 100 | 2.8 |
| 200 | 2.1 |
| 300 | 1.4 |
| 400 | 0.7 |
| 500 | 0.0 |
The values are worked out from MWD = (1-VH/500)3.5 miles. Only a few summits, at least in the northern parts of Britain, need such an application, but it seems to me hardly a 'climb' if it involves both very little vertical height and horizontal traverse. Anyhow, I won't be stopping the car for just three minutes at Bishop Wilton Wold.
