Thunersee Ultramarathon

Race completed

60 km Distance

2,000 m Climbing

6.0 Grit · Hardcore

46.7512° N, 7.6217° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 33 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 12 hours 12:00 min/km average. Generous. Walkable throughout for most of the field. About average for a 50K. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~7 Tiny. You will run alone for most of it.

DUV results for the 2026 edition (60km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, June

Daytime high 21°C

Night low 12°C

Rainfall Showers likely

Daylight 15 h 42 m of light

Regional 2001-2020 average for June — NASA POWER, grid elevation 752 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	60km	7	Kevin Jost · 06:26:40	Linda Witschi · 08:42:51
2025	60km	8	Alexandre Fellay · 05:57:34	Maja Ris · 07:06:51
2024	60km	21	Daniel Schwitter · 07:02:06	Jeanette Bertolini · 07:21:09

The field shrank 12% between 2025 (8) and 2026 (7). 14% of the 2026 field were women.

DUV results for the 2026 edition (60km) — 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 60 km of trail with 2,000 m of ascent.

Trail Running Shoes 33 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 60 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,000 m of ascent to walk up.
Headlamps A 12 h limit puts you out there after dark.

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

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Skratch Labs