An Imja Tse (Island Peak) itinerary blends classic Everest region trekking with technical climbing, typically spanning 16-20 days, including travel to/from Kathmandu, acclimatization in Namche & Dingboche, reaching Island Peak Base Camp (around 5,000m), summiting (6,189m) via a challenging glacier/ice wall push, and retracing the route back to Lukla for the flight to Kathmandu, with crucial rest/acclimatization days and a contingency day essential for success and safety.