Patagonia Bariloche by UTMB
Patagonia Bariloche by UTMB – Frey 80K
San Carlos de Bariloche (Centro Cívico)
Race guide
Updated 19 July 2026
The Frey 80K is the flagship ultra distance of Patagonia Bariloche by UTMB, covering 86 km and 4557 m of vertical gain through the dramatic Andean terrain surrounding San Carlos de Bariloche. The course begins and ends at the iconic Centro Cívico in the heart of Bariloche, sitting at 794 m elevation, and reaches a high point of 1939 m before returning runners to the finish line by the 03:00 cut-off on Day 3. What defines this race is the contrast between its accessible, scenic opening miles and the sustained, technical mountain terrain that dominates the bulk of the route — a course that rewards patience and punishes early aggression in equal measure.
Course & Terrain Overview
Starting and finishing at Centro Cívico Bariloche (794 m), the Frey 80K loops through the Patagonian Andes over 86 km with 4557 m of cumulative climbing. The route's high point sits at 1939 m, meaning runners are navigating significant alpine terrain — rocky trails, exposed ridgelines, and the characteristically unpredictable Patagonian landscape — for the majority of the race. The net elevation change between start and finish is negligible, but that flatness is entirely deceptive: the course is a series of demanding climbs and descents that test both technical trail running ability and muscular endurance. Surfaces range from runnable dirt track in the lower valleys to loose scree, rooted singletrack and boulder fields as the route climbs toward its upper reaches.
Decisive Climbs and Where the Race Is Won or Lost
With 4557 m of gain packed into 86 km, there is no single easy section to coast through — but the climbs approaching and descending from the 1939 m high point are where races unravel. These upper sections demand respect: the altitude relative to the Bariloche start is substantial, and the technical underfoot conditions mean any accumulated fatigue in the legs translates directly into lost time and injury risk. The decisive phase is not the first climb — it's the ability to run the back half of the course with something left. Runners who have gone hard early will find the return legs to Bariloche increasingly punishing, while those who have held back will find themselves moving through a field that has blown up. The race is won on the far side of the course, not at the front of it.
Pacing Strategy
The single most important tactical decision in the Frey 80K is how you treat the first half. The opening terrain can feel generous — runnable, scenic, energising — and that is exactly the trap. A patient, almost social early pace is not a concession; it is the deposit that funds a strong second half. The record-setting approach to this type of course is consistent: go easier than feels necessary early, preserve the legs through the major climbing, and then trust the closer when competitors around you are fading. With a cut-off of 03:00 on Day 3, time pressure is real but manageable for prepared runners — the danger is not the clock, it's accumulated fatigue from pacing misjudgements in the first 40 km. Break the back half into segments: identify landmarks or aid points and commit to reaching them one at a time, transforming a daunting remainder into a series of achievable efforts.
Fueling & Hydration
86 km with 4557 m of climbing demands a disciplined fueling approach from the first hour, not the halfway point. With only Los Baqueanos listed alongside the start and finish, runners should treat this as a self-sufficient effort between checkpoints and carry sufficient calories and fluid capacity to bridge significant gaps. Begin fueling within the first 30 minutes and maintain a steady intake throughout — waiting until hunger or thirst arrives is already too late at this distance and elevation. In the back half, when effort is elevated and the stomach is under more stress, favour familiar, easily digestible foods over anything new. Hydration needs will fluctuate with Patagonian conditions; in hot spells, plan deliberate cool-down resets and rehydration stops rather than trying to push through accumulated heat stress.
Conditions to Expect
Patagonia is notorious for meteorological volatility, and the terrain around Bariloche is no exception. Runners should prepare for the full spectrum: intense sun and heat in the valleys, cold wind and potential precipitation on exposed ridgelines near the 1939 m high point, and rapid weather changes at any point on the course. Layering is essential — the difference in temperature between Centro Cívico at the start and the high alpine sections can be striking, and conditions can deteriorate quickly. Wind in particular is a defining feature of Patagonian mountain racing; it saps energy and makes technical descents more demanding. Start with conservative clothing choices that can be adjusted, carry mandatory gear diligently, and factor weather management into your overall pacing and fueling plan rather than treating it as an afterthought.
Race Patagonia Bariloche by UTMB – Frey 80K with Crux
Get the strategy, fuelling and crew plan dialled for this exact course — built from the real route, climbs and cut-offs. Your first race is free.
Plan this race — freeCourse profile
Checkpoints & cut-offs
✓ Course data verified against the official source (2026-07-05) · official source
0 km · 795 m · —
12.4 km · 812 m · —
17.5 km · 827 m · —
28.6 km · 822 m · Sat 10:40
42.4 km · 815 m · Sat 14:30
56.4 km · 1053 m · Sat 18:00
66.3 km · 1055 m · Sat 22:00
74.3 km · 812 m · Sat 23:30
86.9 km · 795 m · Sun 03:00
More races
More UTMB World Series
More in Argentina
Similar distance (100 km–100 miles)
Racing Patagonia Bariloche by UTMB – Frey 80K?
Get a complete race strategy — pacing, fuelling, crew plan and the crux moments — built on this exact course.
Plan your race in Crux →Strava is your training. Crux is your races.