Machu Picchu (Peru) - "Inca Trail Marathon". Marathon In Distance. Ultra In Effort. The Inca Trail Marathon race tour offers two epic trail race options (a full marathon and half marathon), beautiful mountain trail running, and unique challenges, adventures, and tours in Peru. Run one of the toughest and most scenic marathons on the planet. Make the Inca Trail Marathon your South America Race! www.eriksadventures.com/inca-trail-marathon-race-to-machu-picchu-peru