The record times in 1984 for 35 Scottish hill races.
The components are:
distance in miles (on the map).
total height gained during the route, in feet.
record time in minutes.
A.C. Atkinson (1986) Comment: Aspects of diagnostic regression analysis. Statistical Science 1, 397–402.
[A.C. Atkinson (1988) Transformations unmasked. Technometrics 30, 311–318 “corrects” the time for Knock Hill from 78.65 to 18.65. It is unclear if this based on the original records.]
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.