Sistiana, Italy · Sunday, January 10, 2027

Fixed Distance 50K

S1 TransKarst Ultra

112 days away

55 km Distance

1,600 m Climbing

5.2 Grit · Challenging

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 69% of 50K races. Measured against 1009 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.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	58km	276	Billy Curtis · 04:47:59	Caroline-Claudia Erhart · 06:02:17
2025	54km	263	Gianluca Pinton · 05:09:05	Martina Trojakova · 05:58:45
2024	57km	226	Raphael Miks · 05:22:30	Nicol Guidolin · 06:16:35
2023	57km	227	Mirko Cocco · 04:56:52	Lenka Hiklova · 06:04:38
2022	57km	247	Ivan Favretto · 05:01:00	Irene Zamboni · 06:49:47
2021	57km	148	Andrea Pozzer · 05:20:38	Nicol Guidolin · 06:17:47
2020	57km	550	Martin Halasz · 05:08:02	Julia Kessler · 05:57:20
2019	57km	412	Martin Halasz · 05:03:10	Rea Kolbl · 05:40:37
2018	57km	360	Florian Reichert · 05:07:05	Lisa Borzani · 06:22:34
2017	57km	290	Luca Carrara · 05:12:16	Annemarie Gross · 06:45:51

The field grew 5% between 2025 (263) and 2026 (276). 24% of the 2026 field were women.

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.

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 Shoes 29 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 55 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 1,600 m of ascent to walk up.
Headlamps A 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

★★★★★ 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 →

Overview

The S1 TransKarst Ultra, a 55 km trail race, starts in Sistiana, Italy, and has been organised by Sentierouno ASD since 2017. The course includes PortoPiccolo, Rilke-Weg, Duino, Jamiano, the Kremenjak border path, Sela na Krasu, San Pelagio, and Santa Croce.

With 276 finishers in 2026, this race draws a larger field than 94% of 50k races, placing it among the biggest fields in its peer group of 2654 events. The 13-hour cut-off translates to a 14.2 minutes per km pace, which is tighter than 30% of 50k races. Runners face 1600m of elevation gain, averaging 29.1m of climb per km.

Entry fees range from 55 to 104 Euro for the January 10, 2027 edition.

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