In this case, your best pal is actually your best PAL – a TLA (three-letter acronym). It's the Puigcerdà Andorra Loop. Which, FYI, was planned for a customer this summer. Whose reaction was basically: OMG, these roads are amazing. 

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It's loosely based on the Andorra Dead End Route, but without going up any of the dead-end roads (and heading clockwise rather than anit-clockwise). Instead, there's even more time spend on super-twisty roads in Spain, before nipping through the tiny tax-haven and back through France.

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There are so many amazing roads on this route – not just the highest pass in the Pyrenees and my favourite stretch of the legendary N260 but also miles of mind-blowing bends in the quiet Calatonian mountains. It's a brilliant day guaranteed to elevate any tour – so my advice is just grab a friend and head to Spain PDQ for the ride of your summer.