La Falda, Argentina · Friday, June 26, 2026

Fixed Distance 50 mi

Turmalina Ultra Trail 66K

Race completed

66 km Distance

3,120 m Climbing

8.0 Grit · Hardcore

31.0944° S, 64.4828° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 47 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Time limit 16 hours 14:33 min/km average. Generous. Room to walk the climbs and stop at aid. More forgiving than 85% of 50 mi races. Measured against 477 races of the same distance. Cut-off calculator →

Field size ~83 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (66km) — 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 15°C

Night low 2°C

Rainfall Dry — rain unlikely

Daylight 10 h 08 m of light

Regional 2001-2020 average for June — NASA POWER, grid elevation 942 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	66km	83	Julio Cesar Molina · 07:07:35	Mariela Vigliocco · 09:16:17
2023	78km	35	Gonzalo Inzaurralde · 09:53:34	Laura-Nazarena Irusta · 13:20:43
2019	83.7km	43	Luis Emilio Trujillo · 09:15:34	Natalia Soledad Perez · 12:05:26

The field grew 137% between 2023 (35) and 2025 (83). 17% of the 2025 field were women.

DUV results for the 2025 edition (66km) — 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 mountain course. Poles are highly recommended for the sustained climbs.
gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 66 km of trail with 3,120 m of ascent.

Trail Running Shoes 47 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 66 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 3,120 m of ascent to walk up.
Headlamps A 16 h limit puts you out there after dark.

New Balance

Fuel Cell Super Comp Trail

★★★★★ 4.5

Adidas

Terrex Speed Ultra

RunRepeat found the Adidas Terrex Speed Ultra to have a grippy outsole and great lockdown, while iRunFar noted that the shoe works on a variety of trail conditi…

★★★★★ 4.5

Maurten

Gel 100

Hydrogel technology for 25g carbs per gel with minimal GI distress.

$3.5 ★★★★★ 4.7

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

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

All gear guides →

Overview

The Turmalina Ultra Trail 66K, a 66-kilometer trail race, was run in La Falda, Argentina. With 3120 meters of elevation gain over 66 kilometers, its 47 meters of climb per kilometer means this course was steeper than many other 50-mile races. The event offered a generous 16-hour time limit, which was more generous than 85% of 50-mile race cut-offs. This allowed for a relaxed average pace of 14.5 minutes per kilometer.

The most recent edition in 2025 saw 83 finishers. The race had a field size bigger than 69% of 50-mile races, and smaller than 31%. The Turmalina Ultra Trail 66K has been held 3 times since its first running in 2019.

Similar races

Other 50 mi trail ultras, closest in distance first.