Manaslu Circuit Trek Itinerary: 13-Day, 14-Day and 18-Day Options www.treklanders.com Manaslu Circuit Trek Itinerary: 13, 14 & 18 Days Compare 13, 14 and 18-day Manaslu Circuit Trek itineraries. Explore routes, altitude, acclimatization, Larkya La Pass, difficulty and trekking tips.