Annapurna Base Camp trek is also known as the Annapurna Sanctuary trek wherein both the routes take you to the base camp with a little variation. The 14-day Annapurna Sanctuary trek starts at Nayapul, trekking to Ulleri, then onto Ghorepani, Tadapani, Poon Hill and Chomrong to meet up the regular base camp route. This trek takes a small circular route allowing more acclimatization days and offering diverse sceneries while the 11-day Annapurna Base Camp trek is the shorter version of this trek and meant for those who have time limitations.