First Time in Peru? Here's the Perfect Machu Picchu & Sacred Valley Itinerary for 2026 (With Real Costs)

Reddit keeps asking: How many days do I need for Machu Picchu, Cusco, and the Sacred Valley? This 7-day itinerary prioritizes altitude acclimatization (Sacred Valley first, Cusco last) with real 2026 costs from $899 budget to $2,334 comfort.