17 days EverestThree Pass Trek is the ultimate trekking experience one can everhave in the Everest region. This trek is the most challengingand adventurous trek in the Khumbu region, for it takes you to three snow-covered passes—KongmaLa (5535m), Cho La (5420m), and Renjo La (5360m)—unfolding the gems of theregion.