Vr&scaron;ič Pass Cycling Climb from Trenta

Slovenia Prelaz Vrsic (Trenta)

Prelaz Vrsic (Trenta) Bike Climb - PJAMM Cycling

22.5

PDI

7.7 mi

DISTANCE

3,225 ft

GAINED

ELEVATION GAINED

7.9 %

AVG. GRADE

AVG. GRADIENT

FULL CLIMB STATS

Page Contributor(s): Erwan Treguier, Brittany, France

INTRO

Prelaž Vršič is the south-side ascent of Slovenia's highest paved road, climbing 12.3 km (7.7 mi) from the Trenta valley in Triglav National Park and gaining 983 m (3,225 ft) at a 7.9% average grade to the 1,611 m summit.

The Trenta side is the steeper of Vršič's two approaches: roughly 26 of the pass's 50 total hairpins climb this face, several paved in old stone setts rather than asphalt, switching through larch and spruce forest before breaking into open scree near the top. The road was built by around 10,000-12,000 Russian prisoners of war in 1915-1917 to supply the Isonzo Front in World War I, which is why it's still called the Ruska cesta, the "Russian road." A small Russian Orthodox chapel on the north side, built by the same prisoners, hosts an annual memorial service.

Trenta itself, at the base, is one of the quietest corners of Triglav National Park, threaded by the young Soča river near its source. The road closes with the first heavy snow each year and typically doesn't reopen until late spring, so this is strictly a summer and early-autumn climb.

PLAN YOUR ROUTE

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The Trenta side of Vršič averages 7.9% over 12.3 km (7.7 mi), and it's a steadier effort than the average alone suggests - there's no long flat or descending section to recover on, just a near-constant grade broken by the switchbacks.

The middle kilometers, through the main run of hairpins, are the steepest part of the climb, with several pitches into double digits on the tighter turns. The final kilometer eases noticeably as the road opens up near the summit restaurant and the border with the north (Kranjska Gora) side.

Roadway: Fully paved, in good condition overall - Vršič is Slovenia's main tourist mountain road and is well maintained. The hairpin curves themselves are surfaced in old stone setts rather than asphalt, which adds grip but can be slippery when wet. The Slovenian roads authority carried out reconstruction and parking work near the summit and on both approach roads in 2025-2026; the disruptive closures from that project have wrapped up, but brief weekday maintenance closures are still possible in the work season, so check current road status before a weekday visit.

Traffic: Moderate to heavy in summer, with a steady flow of cars, tour buses, and motorcyclists drawn by the pass's fame - weekends and midday are the busiest. Early morning or shoulder-season riding is noticeably quieter.

Parking: There's a parking area in Trenta village near the Triglav National Park information center (Dom Trenta), and additional pull-offs along the valley road below the switchbacks. The reconstructed parking areas at the summit itself are for anyone continuing on to explore on foot rather than for starting the climb.

A standard road bike is fine here - the road is fully paved, including the switchbacks, though the stone-sett curves reward a bit of extra caution over sheer speed. Gearing that gets you comfortably under 1:1 is worth having given the sustained, unrelenting grade.

There's a restaurant and cabin at the summit for food and water, but nothing along the climb itself below that, so carry enough to get you there. Trenta village at the base has a small shop and the national park info center, while Bovec and Kobarid, both about 20-30 minutes down the Soča valley, have full bike shop and cafe services.

Before heading out on any cycling adventure check out our Things to Bring on a Cycling Trip and use our interactive check list to ensure you don't forget anything.

Bovec and Kobarid, down the Soča valley from Trenta, are the region's main tourist bases, with the widest choice of hotels, restaurants, and outdoor outfitters - both towns also carry a heavy WWI Isonzo Front history, worth an afternoon if you're already here for the road the Russian POWs built. Trenta itself is much quieter, essentially just the national park info center and a handful of guesthouses, which suits an early pre-dawn start on the climb.

If you're basing further north around Kranjska Gora instead, note that's the starting point for a separate, gentler ascent of the same pass from the opposite side - see our Routes in the Area tool for other climbs nearby, including the road up to Mangart saddle.