S1 Borderless Trail 36 km
New 2027! New route!
The Borderless Trail is the right choice if you want a characterful race, with that border flavour that makes the experience different from the classic “loop” races. It is suitable for those who like variety and trails that change pace and atmosphere, without being an extreme ultra, but remaining a serious and memorable race. It is a race that leaves you with the impression that you have really moved within a place, not just within a distance.
📍 Logistics
🧳 Cloakroom service
🚧 Time barriers, aid stations and checkpoints
- 🥤🍴 ⏱️ Medeazza, km 9.8
- 🥤🍴 ⏱️🚧 San Pelagio, km 21.4 13.15
- 🥤🍴 ⏱️🚧 Santa Croce, km 27 14.15
🎒 Mandatory gear
- Food and water needed for running 10 km
- Personal glass or cup for drinking at aid stations
- Headlamp
- Trousers and long-sleeved shirt, or a combination that fully covers arms and legs if needed
- Thermal blanket (emergency isothermal sheet)
- Gloves, cap and windbreaker
- Mobile phone
🚌 Shuttles
💶 Entry fees
- € 36 until 1 June
- € 40 until 1 September
- € 55 until 1 November
- € 60 until 15 December
- € 75 until 10 January
🏅 Awards
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Route and Altitude Profile
Cancellations and Relief
Can't find the GPS track?
Use our interactive map (and, when available, those of ITRA): they offer a accurate representation to the centimetre of the route, not downloadable but more than enough to draw your reconnaissance laps.
We often publish rings and sections precisely so that you can test the track yourself before the event.
To avoid inconsistencies and ensure that everyone uses the latest version, the official GPX track is only released once, in the week before the race. In the past, many people would download a track many months in advance and then no longer follow the updates: with any works, detours or temporarily impracticable passages, they risked using a file that was not aligned with the balisage. That is why today we only distribute the GPX close to the event.
In the meantime, we recommend:
- display previous years' tracks online, useful for training and surveys.
- consult the interactive map to plan reconnaissance;
- check our Facebook page and articles on the website for updates and reconnaissance tours;
CAI trail network
This course follows the CAI trails of the Karst
The race alternates trails from the CAI FVG registry — Sector 0, Karst — with connecting sections of its own, marked by the organisation.
- CAI 001
- CAI 001a · Sentiero del Mitreo
- CAI 033
- CAI 003a
- CAI 003 · Alta Via del Carso
- CAI 032
- CAI 010
- CAI 035
- CAI 023 · Tiziana Weiss
The route
The start from the Bora Village is breathtaking: the Adriatic behind you, the white cliffs ahead. You climb to the Karst edge, stretch out along the Sentiero Rilke, cross Duino below the castle, and then the Karst opens up.
The heart of the race is the Monte Ermada ridge, the cross-border sector where the landscape is still that of the First World War: summits, dolines, caves turned into war shelters. Past the Grotta del Motore you carry on eastwards on your own, between the Grotta Dörfler and Monte Sambuco, before meeting the long distances again and heading back to the sea via San Pelagio, the Lupinc Park and Santa Croce.
It is a race with character, with that frontier flavour that sets it apart from the classic loop races.
Who is this race for
The S1 Borderless Trail is a course that changes pace and atmosphere, with the cross-border sector of Monte Ermada at the centre of the race, between Medeazza and San Pelagio. It is a serious and memorable challenge, not an extreme ultra.
Medical certificate. Mandatory for competitive activities (athletics, cross-country skiing, triathlon, cycling, or swimming). Exemptions apply to competitors who are not Italian citizens and are not part of an Italian sports club recognised by CONI.
The right rhythm. At a sustained walking pace (around 5 km/h), the 35.8 km are covered in approximately 7 hours and 10 minutes. Pure fast hiking is at the limit of the 7-hour maximum time, achievable only by maintaining sustained paces on the easier sections and respecting the intermediate checkpoints. The second half (Santa Croce-Finish) is the fastest section of the entire route and allows for time to be made up.
Dogs. Not permitted: The S1 Borderless Trail is a competitive/athletic race.
Sister races — 30-36 km band. In terms of physical commitment, the S1 Borderless Trail falls into the 30-36 km range of the group's event family, where direct sister events include the Jôf Trail (30.5 km) from Alpe Adria Ultra Trail, Summer edition. There are no Sardon Run races in this specific range.
Do you want to train on the S1 Borderless Trail routes even outside of race weekend? The guide Trail Running in Trieste collects paths in the Karst region that are accessible all year round.
In Trieste, you never know.
One year in short sleeves drinking beer by the sea after the race. The next year wrapped up to the teeth. The weather changes, the fun remains. Look at the statistics of 10 editions and decide at the last moment how to dress.
Gallery
PortoPiccolo - Bora Village
Start and finish of all races. The Bora Village in PortoPiccolo is the base of the event: a completely covered and heated facility overlooking the Gulf of Trieste, where you will find everything you need before, during and after the race.
A single location for bibs, expo, showers, catering and prize-giving - no trips, no dispersal. You arrive, you run, you celebrate.
Accommodation
Apartment or hotel: book independently or directly from your runner profile. At La Corsa della Bora you can share an apartment with other runners - we take care of matching roommates.
PortoPiccolo and Sistiana offer solutions within walking distance. Trieste is a 20-minute bus ride away.
Shuttles
Dedicated shuttles both to and from Trieste Central Station to Bora Village and vice versa. Each distance has its own timetable - check the page for your race.
Bora Village is also on the regular airport-Trieste bus line: you can reach it by public transport without a shuttle bus.
Arriving in Trieste
Bora Village is in a strategic location:Two minutes from the motorway exit, 15 minutes from Trieste Central Station, 20 minutes from Friuli Venezia Giulia Airport.
By car, train, bus or plane - Trieste is closer than you think. From Ljubljana it is 90 minutes, from Venice less than two hours.
PortoPiccolo, Sistiana - Duino-Aurisina (TS) - 2 min from the A4 motorway - 45.7633° N, 13.6350° E
🩺 Medical certificate: competitive and non-competitive
✅ Without medical certificate
🚧 Only with medical certificate
- NOT you are an Italian citizen and
- NOT you belong to an Italian sports club recognised by CONI