This is a series of puzzle caches based upon the UCI World Tour. Each puzzle builds on the next and they will get increasingly more challenging as you progress through the series. The puzzles will lead to a trail of caches along official cycle routes and therefore are best done by bike. The caches are small and will not contain swaps but could cope with a small TB or geocoin.
Go to the highest point of the 2015 Critérium du Dauphiné and find the two nearest road signs. Either sign will get you the numbers you need. On one sign Barcellonette is AB km and Col de Vars is CB km. According to the road sign the height of the summit on the road is AACBm.
Stage D had 5 1st category climbs.
Subtract (A/2)(B+D+1) from the Northing of Stage 17.
Subtract (C-4)D(A+D) from the Westing of Stage 17.
You can validate your puzzle solution with certitude.
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