Puerto Natales, Patagonia, Chile · usually early February (date TBC)

Ultra Fiord

55 km Distance

4,000 m Climbing

8.8 Grit · Elite / extreme

51.7236° S, 72.4978° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 73 m / km Vertical. Extreme verticality. This is a technical mountain course with sustained steep grades.

Time limit 14 hours 15:16 min/km average. Generous. Room to walk the climbs and stop at aid. More forgiving than 80% of 50K races. Measured against 1046 races of the same distance. Cut-off calculator →

Field size ~33 Small. Long stretches with nobody in sight.

DUV results for the 2024 edition (55km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, February

Daytime high 12°C

Night low 4°C

Rainfall Showers likely

Regional 2001-2020 average for February — NASA POWER, grid elevation 400 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2024	55km	33	Lutz Eber · 08:38:49	Katherine Canete Arredondo · 09:34:52
2023	55km	10	Emmanuel Alexan Acuna Cartes · 08:04:42	Katherine Canete Arredondo · 10:08:09
2022	55km	30	Joel Moises Barra Castillo · 07:34:32	Marlene Flores Paredes · 09:52:01
2017	50km	30	John Tidd Kimball · 07:50:50	Luciana Moretti · 07:50:50

The field grew 230% between 2023 (10) and 2024 (33). 27% of the 2024 field were women.

DUV results for the 2024 edition (55km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

terrain This is a vertical course. Poles are highly recommended for the sustained climbs.
gear With mountain terrain, choose a shoe with aggressive lugs (5mm+) for optimal performance.

Gear for this race

Chosen for 55 km of mountain with 4,000 m of ascent.

Trail Running Shoes 73 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 4,000 m of ascent to walk up.
Headlamps A 14 h limit puts you out there after dark.