It is about 15 minutes from Main Entrance gate of Machu Picchu Sanctuary to gate for the climb to Machu Picchu Mountain. (inkaltitude.com)
The deserted main entrance gates, ticket booths, empty cafeterias and deteriorated main buildings with partly collapsed roofs all give it a creepy sensation even in broad daylight. (bali-indonesia.com)
It is recommendable to make your way to Machu Picchu around 4 am as it is still a good hour's walk to the Sun Gate after you passed the main entrance gate. (southamericatravelblog.com)