Machu Picchu is located on a mountain ridge above the Sacred Valley, and exploring the site requires a significant amount of walking. The exact amount of walking required depends on which areas of the site you choose to visit, but most visitors can expect to do some uphill and downhill walking along narrow and sometimes steep paths.

To reach the entrance of Machu Picchu, visitors must take a bus or walk up a series of switchback trails from the town of Aguas Calientes. From there, visitors can choose to explore the upper and lower sections of Machu Picchu, including its famous terraces, temples, and residential areas.

The upper section of Machu Picchu is located on a steep slope and requires a bit more walking, including a climb up to the Sun Gate and a visit to the Inca Bridge. Visitors can expect to walk for several hours to see all of the main attractions, but shorter walking routes are also available for those who prefer a more leisurely experience.

Overall, a visit to Machu Picchu requires a moderate level of physical fitness and comfortable walking shoes. Visitors should also be prepared for the high altitude, which can make walking more challenging for some. However, the incredible views and fascinating history of Machu Picchu make the walking required well worth the effort.