The Traverse of the Cuillin Ridge of Skye is the finest mountaineering adventure in the British Isles. In 12.5km there is 3000m of ascent and descent taking in in over ten Munros. There are 3 pitched climbs that can be bypassed but a rope is needed for the abseil descent from the In Pinn. The TD Gap and Naismith's Route are now graded Severe.
Allow 2.5hrs each for the approach and decent. The Traverse can take anything from 7 to 20 hours! (Or three if you're Finlay Wild.) Soloing virtually all but the climbs is almost essential for a single day push. Bivvying is popular but carrying kit detracts from the joy of so much good scrambling. Prepare well.
In winter, it is important to pick a good weather slot after snow and then hard frost. Most parties bivvy en route.
If attemping a winter traverse it would be a good idea to inform local rescue/police in case lights are mistaken for a distress signal.