The Terre di Siena Ultramarathon is an endurance event in Tuscany that features multiple IAU-certified courses passing through vineyards, historic trade routes, and scenic landscapes such as cypress alleys, valleys, and hilltop villages. Participation is limited to a set number of runners per course to maintain an intimate atmosphere. The event is designed to immerse participants in the region’s cultural and natural heritage, highlighting the area’s Renaissance and Etruscan history.