Seven Serpents 2026
📍 Ljubljana to Trieste, Slovenia
gravelmtb
Date
7 June 2026
Distance
1000km
Difficulty
gravel
Green Border Gravel
South-Eastern Slovenia, Slovenia · 4–6 September 2026
Difficulty: 4/5 — Very hard
This demanding 300 km self-supported gravel adventure through Slovenia's borderlands features over 7000 m of climbing, primarily on forest roads and compact gravel. It offers a true adventure-race feel with significant isolation and wildlife.
Visit official site →- Distances
- 300 km
- Elevation
- 7,000 m
- Surface
- gravel, dirt
- Typical W/kg
- 2.8–3.8
Rider fit
Who it's for
This event is ideal for experienced gravel cyclists seeking a demanding multi-day challenge in a remote, natural environment.
Who will struggle
Beginners or riders uncomfortable with long hours in the saddle, significant climbing, and self-sufficiency in remote areas will find this route particularly challenging.
Training focus
Training should prioritize long-distance endurance, sustained climbing power, and bike handling skills on varied unpaved surfaces.
Are you ready for this race?
Compare your W/kg to see how you stack up against this race's typical level — and which races fit you best right now.
FAQs
What is the route's distance, elevation, and terrain type?+
The route is a 300 km loop with over 7000 m of climbing, consisting of approximately 70% unpaved surfaces like forest roads and compact gravel, with some rougher sections.
What does "self-supported" mean for riders?+
Riders must rely entirely on public resources such as shops, cafes, water points, and accommodation. No outside assistance from friends or teams is permitted.
How challenging is the Green Border Gravel route?+
It is a demanding route defined by long gravel sectors, remote ridgelines, and quiet valleys, requiring solid bike handling and smart pacing due to its significant climbing and unpaved sections.
Where is the event located and what are the travel options?+
The event starts and finishes in Olympic Center Novo mesto in South-Eastern Slovenia. It's easily reachable by car from Ljubljana or Zagreb airports, or by bus/train from Ljubljana.
When does the Green Border Gravel event take place?+
The event is scheduled from 4–6 September 2026, with the official start on 5 September 2026 at 8:00.
What is included with event registration?+
Registration includes a rider pack, GPX tracking for the route, and a warm meal provided at the finish line. Sponsor prizes will also be raffled.
