A 100-mile overnight odyssey through the UNESCO Val d'Orcia's rolling Tuscan hills
A 161km loop through the Val d'Orcia UNESCO World Heritage Site, departing Friday evening and running through sunset, night, and dawn to finish in Castiglione d'Orcia on Saturday. The course covers three distinct zones: the wine country above Montalcino (home of Brunello wine) with the Abbey of Sant'Antimo; the classic Tuscan landscapes near Pienza and San Quirico d'Orcia; and the wilder mountain terrain climbing to 1,050m at Vivo d'Orcia. The semi-autonomous route follows the famous white gravel roads of the Val d'Orcia (strade bianche), forest singletrack, and village paths, with multiple river crossings and passages through medieval towns. A GPS tracker is provided to all 100-mile participants.
Experienced ultrarunners
Castiglione d'Orcia, Siena, ItalyApril 17, 2026
| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 520 m |
Finish Finish | 159.7 | 520 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Free dormitory gymnasium available in Castiglione d'Orcia for participants (opens Friday 17 April at 4pm, closes Sunday 19 April at 10am). Various hotels, agritourism farmhouses, and B&Bs nearby in Castiglione d'Orcia, San Quirico d'Orcia, and surrounding villages.
Mid-April conditions in Val d'Orcia shift rapidly — 0-8°C at night rising to 15-20°C midday. Sudden rain and wind possible on exposed ridge sections.
Course is highly exposed on open gravel roads and hillsides; significant sun and UV exposure during daytime sections.
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