The great winter trail on the Trieste Karst, from 4 to 100 km
The Corsa della Bora – S1 Trail is the most important trail running event in the Trieste area: every year, around Epiphany, it attracts thousands of runners from dozens of countries to the Karst. It takes its name from Trieste's most famous wind, the Bora, which blows fiercely over these limestone plateaus overlooking the Adriatic, and is based in the resort of Portopiccolo, in Sistiana, within the municipality of Duino-Aurisina.
The event's strength lies in its variety of distances, from the shortest and most accessible to the extreme ultras: it ranges from a few kilometers designed for families and beginners to ultra-races exceeding 100 km, traversing the trails of the Italian and Slovenian Karst. The routes are renewed each year, offering regular participants new challenges and ever-changing scenery.
Over the years, the Corsa della Bora has grown to international significance, with thousands of participants from numerous countries. Organized by the Municipality of Trieste with the SentieroUNO Association, it is part of the S1 Trail circuit and represents for many the opportunity to kick off the trail season in a unique setting, where the Karst stone, forests, and sea merge.
Running in the Karst means crossing a stark and fascinating landscape: sinkholes, dry stone walls, karst scrubland, forests, and breathtaking views of the Gulf of Trieste. Even for those not competing, the Corsa della Bora is an opportunity to discover this border region between Italy and Slovenia, rich in nature and history.
The 11th edition of the Corsa della Bora kicks off Trieste's 2026 sporting calendar on January 3 and 4, with its base in the Portopiccolo resort in Sistiana. Eight distances, from 4 to 105 km, lead athletes along the trails of the Italian and Slovenian Karst; approximately 3,000 participants are expected from over 40 countries. Traffic diversions are planned in the area on race days.
The start times for individual distances and details of the routes (renewed annually) will be published on the s1trail.com website.
Race base: Portopiccolo, Sistiana (Duino-Aurisina), a few minutes from the A4 motorway and about 20 minutes from FVG airport.
Getting there: by car via A4 (Sistiana/Duino exit) or from FVG Airport of Ronchi dei Legionari; shuttle buses and directions available on race days.
Registration: via the s1trail.com website, with a choice of different distances.
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Portopiccolo – Carso triestino