Ultra Fiord is a 100 miles ultra marathon in Puerto Natales, Chile. Distance: 161km. Elevation: 4,500m D+. Difficulty: brutal (Challenge Rating 50/100). DNF rate: 45%. Time limit: 48h. Surface: trail. Established 2015.
Ultra Fiord
Puerto Natales, Patagonia, Chile
"100 miles through Patagonian fjords. Glaciers, Torres del Paine, and 100km/h winds."
Ultra running through the most dramatic landscape on Earth — Patagonian fjords, glaciers, and the Torres del Paine.
The Course
Through the fjords and mountains of Patagonia, past glaciers, lakes, and the Torres del Paine massif. Brutally exposed to Patagonian winds that can reach 120km/h. The landscape is among the most dramatic on Earth.
mountainous
point-to-point
10
Runner Experience
Remote course with widely spaced aid points. Runners should be prepared for long unsupported stretches.
A legendary finish line atmosphere. Ultra Fiord is a bucket-list race with celebrations that match its reputation.
Race Day Weather
6°C
-2° – 12°
75%
60%
Patagonian autumn — relentless wind, rain, and rapidly changing conditions. Four seasons in one day is the norm.
Stats & Records
2015
60
38:00:00
Entry
$600
June
months
Lore & Trivia
Ultra Fiord runs through Chilean Patagonia's fjord country — 100 miles of coastline, temperate rainforest, and glacial valleys where the Andes meet the Pacific. The course explores the labyrinth of waterways, islands, and peninsulas that define southern Chile, passing through terrain that is simultaneously lush (southern beech forest, mosses, ferns) and savage (Patagonian wind, horizontal rain, temperatures near freezing). This is Patagonia beyond Torres del Paine — the wild, wet, densely forested Patagonia that most tourists never see.
- ▸ 100 miles through Chilean Patagonia's fjord country.
- ▸ Temperate rainforest, glacial valleys, and wild coastline.
- ▸ Patagonian wind is a constant — gusts exceed 80km/h.
- ▸ The fjord landscape is a labyrinth of waterways and peninsulas.
- ▸ Southern beech forest is dense and dripping with moisture.
- ▸ Temperatures near freezing even in summer.
- ▸ One of the most remote ultras in South America.
Ultra Fiord is Patagonia without the postcards. No granite towers — just endless forest, wind, and rain.
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Frequently Asked Questions
How long is Ultra Fiord? +
Ultra Fiord is a 100 miles (161km) ultra marathon with 4,500m of elevation gain. The course is point-to-point on trail terrain.
How hard is Ultra Fiord? +
Ultra Fiord is rated brutal with a Challenge Rating of 50/100 (Challenging). The DNF rate is 45%. Runners have 48 hours to finish.
What is the weather like at Ultra Fiord? +
Average temperature is 6°C (range -2°C to 12°C) with 75% humidity and a 60% chance of rain. Patagonian autumn — relentless wind, rain, and rapidly changing conditions. Four seasons in one day is the norm.
Are crew and pacers allowed at Ultra Fiord? +
No crew access is permitted. Pacers are not allowed. Mandatory gear is required.
What is the average finish time for Ultra Fiord? +
The average finish time is 38:00:00. About 60 runners finish each year. The DNF rate is 45%.
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