Sistiana, Italy · Sunday, January 10, 2027

Fixed Distance 50K

S1 TransKarst Ultra

64 days away

55 km Distance

1,600 m Climbing

5.2 Grit · Challenging

45.7716° N, 13.6373° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 29 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 13 hours 14:11 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 70% of 50K races. Measured against 1087 races of the same distance. Cut-off calculator →

Field size ~276 Large. Rarely out of sight of another runner.

DUV results for the 2026 edition (58km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, January

Daytime high 3°C

Night low -3°C

Rainfall Mostly dry

Daylight 8 h 54 m of light

Regional 2001-2020 average for January — NASA POWER, grid elevation 512 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 55 km of trail with 1,600 m of ascent.

Trail Running Shoes29 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition55 km of self-supported fuelling between aid stations.
Hydration VestsPole attachment and chest-strap stability on steep ground.
Trekking Poles1,600 m of ascent to walk up.
HeadlampsA 13 h limit puts you out there after dark.

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Adidas

Terrex Speed Ultra

RunRepeat found the Adidas Terrex Speed Ultra to have a grippy outsole and great lockdown, while iRunFar noted that the shoe works on a variety of trail conditi…

★★★★★ 4.5

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

Nitecore

UT32

Dual-beam trail running headlamp (1100 lumens) with spot and flood beams.

$100 ★★★★★ 4.5

All gear guides →

Course Notes

Start in PortoPiccolo, Rilke-Weg und Duino, den langen Abstecher Richtung Jamiano, den Grenzpfad des Kremenjak, den slowenischen Karst von Sela na Krasu und zurück über San Pelagio und Santa Croce.

Similar races

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