Arrived on Arran to cycle a lap of the island on the tandem only to discover a 5 mile section of the road is currently closed. So instead we did a north loop followed by a south loop. This took in all 3 big cat 3 Arran climbs - the String, the Lochranza climb and the Ross - as well as countless cat 4s. A huge effort, but wonderful fun - and further and MUCH more climbing than the originally planned lap.
https://graemeritchie.com/Tandeming-Arran