We're just off to Yllas for the fifth time, Why? As a cross country skier, the area is heaven! More track than I can ski in a week - all well groomed for both classic and skating styles. There are plenty of easy "blue" routes for relative novices, but also red and black routes for the experienced. With a ski bus running to the bottom of the down-hill slopes, and to the other side of the fell, you can all ski in the morning on easy routes, then those who have had enough can bus back whilst the others ski more demanding routes back.
Skiing through the woods, over a fell or across a lake by yourselves, under a glorious pink and mauve ski, coming across reindeer, spotting a ptarmigan or stopping to feed Arctic Jays from your hand is all part of the magic.
Be aware of the low temperatures, always put on a warm coat when you stop - it is a lot colder than it feels! and always wear gloves when you open your flask, or your fingers can freeze to it!
Also be aware of time and darkness - in early January the sun is up for only 2 hours, but it is twilight for longer, giving you 4-5 hours of skiing, unless you plan your route to ski on lit routes, which stay lit until 10.pm.
To find out more about cross country skiing in Yllas ask the locals and the ski shops - British reps focus on downhill and excursions.