Zürich, Switzerland · Saturday, April 3, 2027

Fixed Distance 100K

Lake Zuri 100 Endurance Run

185 days away
106 km Distance
3,200 m Climbing
10.0 Grit · Elite / extreme
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47.3667° N, 8.5500° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 30 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 18 hours 10:11 min/km average. Generous. Walkable throughout for most of the field. About average for a 100K. Measured against 214 races of the same distance. Cut-off calculator →
Field size ~156 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 edition (106km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, April

Daytime high 14°C
Night low 4°C
Rainfall Showers likely
Daylight 12 h 54 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 567 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2026 106km 156 Raphael Sprenger · 09:10:07 Sophia Lehmann · 11:32:45
2025 106km 148 Raphael Sprenger · 09:17:27 Helga Fabian · 11:56:26
2024 106km 112 Raphael Sprenger · 09:34:54 Claire Marine Bannwarth · 12:22:17
2023 106km 73 Henrik Ove Westerlin · 10:28:36 Luzia Bühler · 11:06:49

The field grew 5% between 2025 (148) and 2026 (156). 15% of the 2026 field were women.

DUV results for the 2026 edition (106km) — 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
🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 106 km of trail with 3,200 m of ascent.

  • Trail Running Shoes 30 m of climb per kilometre — grip and rock protection before cushioning.
  • Race Nutrition Past 106 km the palate quits before the legs do — carry more than one flavour.
  • Hydration Vests Pole attachment and chest-strap stability on steep ground.
  • Trekking Poles 3,200 m of ascent to walk up.
  • Headlamps A 18 h limit puts you out there after dark.

Asics

Trabuco Max 3

★★★★★ 4.6

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

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 Lake Zuri 100 Endurance Run is a 106km trail race around Lake Zürich, with 3200m of elevation gain. This makes it a hillier course than 30 other 100k races. Its 18-hour cutoff is tighter than 47% of 100k races, requiring a pace under 10.2 minutes per kilometer to finish.

With 156 finishers in its latest edition, the Lake Zuri 100 Endurance Run has a larger field than 83% of 312 comparable 100k races. It has been run 4 times since 2023, with the next edition scheduled for April 3, 2027.

Similar races

Other 100K trail ultras, closest in distance first.