Horse riding and pony trekking in Aviemore and the Cairngorms is available at a number of nearby centres

Alvie Stables - Adventures on Horseback

Alvie Estate
http://www.alvie-estate.co.uk/activities/horse-riding

Rothimurchus Estate
http://rothiemurchus.net

Carrbridge, a few miles north of Aviemore
http://www.carrbridge-ponytrekkingcentre.co.uk/

A few miles south of Aviemore at Newtonmore
http://newtonmoreridingcentre.com/