The Cairngorms provide some of Scotland's most challenging walking, with no fewer than 49 Munros and half of Britain's eight mountains over 4,000 ft (Ben MacDrui, Braeriach, Cairn Toul and Cairn Gorm). These mountains come into their own in winter, providing experienced climbers with a wide range of classic ice climbs. They should not be taken lightly. They require a high degree of fitness, experience and preparation.
The summit of Cairn Gorm (4,084 ft) is readily accessible as you take the chair-lift up to the Day Lodge (see above) and from there it's a relatively short climb to the top, though you should be prepared for a sudden change in weather conditions. There are 50 miles of footpaths through this area, including some lovely walks through the forests. There are also ranger-led guided walks. You can find out more at the Rothiemurchus Estate Visitor Centre, Tel. 810858, which is a mile from Aviemore along the Ski Road. It' s open daily 0900-1700 and can provide a free Visitor Guide and Footpath Map. Another good area for walking is around Glen More Forest Park. The visitor centre, Tel. 861220, near Loch Morlich has a Glen More Forest Guide Map which details local walks.
The best known of the long-distance trails is the Lairig Ghru, a 25-mile hike from Aviemore over the Lairig Ghru Pass to Braemar. The trail is well marked but can take at least eight hours and is very tough in parts, so you'll need to be properly equipped and prepared.