K2 Base Camp Trek 2026 – Complete Route, Cost, Permits & Best Time is one of the most iconic trekking adventures in Pakistan, spanning approximately 220 km round-trip from Skardu to the base of the world’s second-highest peak. The trek is moderately challenging, requires 14–18 days, and the cost varies between $1,200–$2,500 USD depending on your choice of guide, accommodations, and tour package. The best time to attempt this trek is June to September when weather conditions are most favorable.