Annapurna is a popular name for a trek within the Annapurna mountain range of central Nepal. The total length of the route varies between 160–230 km (100-145 mi), depending on where the motor transportation is used and where the trek is ended. The trek rises to an altitude of 5,400m on the Thorung La pass, touching the edge of the Tibetan plateau. This trek crosses two different river valleys and encircles the Annapurna massif, crossing Thorung La (5416m), the highest pass on this trek. Practically all trekkers hike the route counter clockwise, as then the daily altitude gain is slower and crossing the high Thorong La pass is easier and safer.
The mountain scenery, seen at close quarters includes the Annapurna Massif (Annapurna I-IV), Dhaulagiri, Machhapuchhre, Manaslu, Gangapurna and Tilicho Peak. Many peaks of 6000-8000 m in elevation rise from the Annapurna range.
Some of the popular treks in Annapurna region are:
* ABC (Annapurna Base Camp) Trek
* Round Annapurna
* Round Annapurna through Nar-Phu Valley
* Lower Mustang Trek
* Balcony of Annapurna