Desafío Valle de los Perdidos

Trail Running covering 4.5 km to 25.4 km with up to 1,672 m D+ in El Bolsón (Rio Negro, Argentina)

Location

El Bolsón, Río Negro, ArgentinaShow on map(41.9649° S, 71.5353° W)

Date & StatusNovember 20, 2026 to November 21, 2026Date confirmed

First edition2017

Elevation gainUp to +1,672 m

Desafío Valle de los Perdidos is an endurance sporting event in El Bolsón, Río Negro, AR focused on Trail Running. First held in 2017, the event is an established fixture on the endurance calendar. It is part of UTMB Index Races. Key features include Nature & Off-Road, Mountain, Forest, Multi-Day.

The race program comprises 4 competitions, including 25 Km (25.39 km, +1,672 m D+), 12 Km (12.56 km, +1,089 m D+), 6 Km (6.37 km, +462 m D+), and Trail 4.5 km (4.5 km, +760 m D+). The next edition is officially confirmed from November 20, 2026 to November 21, 2026. Official race regulations, course details, and registration information are provided on the organizer's website (vptrail.com).

Official website

Desafío Valle de los Perdidos in El Bolsón (Work: "Rockies in the morning", Photo: Sergey Pesterev, License: CC BY-SA 4.0, Source: Wikimedia Commons) — "Rockies in the morning" · Photo: **Sergey Pesterev** · Wikimedia CommonsCC BY-SA 4.0
Cropped to 16:9 (960 × 540 px), WebP · Shared under the same license

Event characteristics

Nature & Off-Road Mountain Forest Multi-Day

Races & distances (4)

Competition	Discipline	Distance	Elevation gain	Altitude range	Course type	Course & profile
25 Km	Trail Running	25.39 km	+1,672 m	620 m - 1,322 m	Loop course	Route & profile
12 Km	Trail Running	12.56 km	+1,089 m	623 m - 1,080 m	Loop course	Route & profile
6 Km	Trail Running	6.37 km	+462 m	626 m - 820 m	Loop course	Route & profile
Trail 4.5 km	Trail Running	4.5 km	+760 m	629 m - 948 m	Loop course	Route & profile

Course & Elevation Telemetry

Course route & map

Distance

25.39 km

Elevation gain

+1,672 m D+

Elevation loss

-1,672 m D-

Altitude range

620 m - 1,322 m

Gradient (Avg / Max)

13.2 % / 23.8 %

Course format

Loop course

25.39 km+1,672 m D+Peak 1,322 m

Start (S)Finish (F)DownhillFlatClimbSteep

Elevation profile & course telemetry

Altitude from 620 m to 1,322 m above sea level (+1,672 m D+, -1,672 m D-)

Peak: 1,322 m·at 10.1 km·Ø 13.2 %

Event Information & Answers

Frequently asked questions (FAQ)

When and where does Desafío Valle de los Perdidos take place?

Desafío Valle de los Perdidos takes place in El Bolsón, Río Negro, AR (start area at coordinates 41.9649° S, 71.5353° W). The next edition is officially confirmed from November 20, 2026 to November 21, 2026.

What races and distances are offered at Desafío Valle de los Perdidos?

The race program comprises 4 competitions, including 25 Km (25.39 km, +1,672 m D+), 12 Km (12.56 km, +1,089 m D+), 6 Km (6.37 km, +462 m D+), and Trail 4.5 km (4.5 km, +760 m D+). The competitions belong to Trail Running.

What is the course layout and elevation profile for Desafío Valle de los Perdidos?

The main competition (25 Km over 25.39 km) is designed as a loop course featuring +1,672 m of elevation gain and -1,672 m of elevation loss, ranging between 620 m and 1,322 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.

Where can I find registration and official race rules for Desafío Valle de los Perdidos?

Official race regulations, course details, and registration information are provided on the organizer's website (vptrail.com).