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.
Stage 6 of the 2015 Tour of the Basque was a hilly time trail starting and finishing in Aia. When the riders were 2.32km into the stage what was the gradient? Subtract the gradient from your Northing of Stage 13.
The height in M above sea level that the riders are at this point is ABC.They have just been around a bend. The speed limit for cars on that bend is DE. Subtract (D-3)CA from the Westing of Stage 13.
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