Quimiag, Ecuador · Sunday, September 20, 2026

Fixed Distance 50 mi

Altar Reto Trail - 70K Oso de Anteojos

Race completed
65 km Distance
2,570 m Climbing
7.1 Grit · Hardcore
1.6617° S, 78.5434° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 40 m / km Mountain. Significant climbing. Steep sections will require power hiking.
Field size ~5 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (65km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 16°C
Night low 5°C
Rainfall Mostly dry
Daylight 12 h 06 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 3004 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 65km 5 Jorge Gustavo Romero Freire · 10:34:09 —
2024 65km 10 Angel Rodolfo Lopez Morocho · 09:20:41 Hilda Rebeca Pusay Chiriboga · 10:36:45
2019 60km 11 Angel Rodolfo Lopez Morocho · 10:12:27 —

The field shrank 50% between 2024 (10) and 2025 (5). 0% of the 2025 field were women.

DUV results for the 2025 edition (65km) — 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. Expect fast, runnable sections where rhythm is key.
  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 65 km of trail with 2,570 m of ascent.

All gear guides →

Overview

With a field smaller than 95% of 50mi peers and bigger than just 4%, runners faced near-total isolation on course rather than pack racing. The 2025 edition saw only 5 finishers manage the route through Quimiag, Ecuador, underscoring an event where self-reliance dictated race day.

The 65-kilometer trail race packed 2570 meters of total ascent—amounting to 39.5 meters of climbing per kilometer—demanding sustained uphill pacing through the high mountain lake system of El Altar. Entrants navigated past Laguna Mandur, Laguna Azul, Laguna Negra, Laguna Estrellada, and Laguna Amarilla, balancing heavy vert against rugged, high-altitude terrain.

Similar races

Other 50 mi trail ultras, closest in distance first.