Matterhorn Ultraks (Zermatt, 21-23 Aug 2026)
Matterhorn Ultraks EXTREME
Zermatt
Race guide
Updated 19 July 2026
The Matterhorn Ultraks EXTREME is a 25 km mountain race based in Zermatt, Switzerland, packing 3070 m of vertical gain into a route that reaches a high point of 3333 m. Despite the relatively short distance, this is a genuine high-alpine sufferfest — the climb-to-distance ratio sits above 120 m per kilometre, placing it firmly in the elite tier of European mountain races. Held on Friday 22 August 2026 as part of the wider Matterhorn Ultraks festival (21–23 August), the race starts and finishes in Zermatt (1636 m) and demands technical fitness, altitude awareness and careful time management to beat the mandatory cut-offs that close the course throughout the day.
Course & Terrain
The route leaves Zermatt at 1636 m and climbs aggressively to Furi at 2786 m by the 5 km mark — a gain of 1150 m in the opening quarter of the race. From Furi the course descends slightly to Schwarzsee (2592 m) at 9 km before launching into the hardest climbing section, grinding up to Hoernlihuette at 3203 m by km 12. The high point of 3333 m sits in the Hoernlihuette area, placing runners directly beneath the Matterhorn itself. From there the course swings through the Trockener Steg area (2921 m) at km 17 before a long 8 km descent back into Zermatt at 1629 m. Expect a mix of steep trail, rocky alpine terrain and exposed ridgeline paths. The upper sections above 3000 m are genuine high-alpine ground — loose rock, potential snowfields depending on the season, and no shelter from wind. Route-finding demands full attention; poles are strongly advisable given the gradient and technical underfoot conditions.
The Decisive Climbs — Where the Race Is Won and Lost
The race hinges on two brutal ascent blocks. The first is the opening 5 km to Furi, which averages 230 m of climb per kilometre and will shred any runner who goes out too hard from the gun in Zermatt. The second and more decisive block runs from Schwarzsee (2592 m) to the high point near Hoernlihuette (3203 m+) — roughly 3 km of climbing above 2600 m where altitude begins to bite. At this elevation in the Alps, oxygen availability drops noticeably, and runners who have not spent time above 2500 m in the weeks before the race will feel it sharply. The descent from the high point through Trockener Steg and back to Zermatt covers approximately 8 km and drops nearly 1300 m — a punishing quad-breaker that demands technical descending skill. Running hard on this terrain when already fatigued from 17 km above 2500 m is where places are won and lost, and where the risk of a fall is highest.
Pacing & Cut-Off Strategy
The cut-off schedule demands respect. Schwarzsee (9 km) closes at 11:00; Hoernlihuette (12 km) at 12:30; Trockener Steg (17 km) at 14:30; and the finish in Zermatt at 17:00. If the race starts early morning, the 90-minute window between Schwarzsee and Hoernlihuette is the tightest relative to the terrain — 3 km of high-altitude climbing. Arrive at Schwarzsee with margin and do not gamble on the upper mountain. Pacing the first climb to Furi conservatively is non-negotiable; it is easy to redline here and pay the price at 3000 m. There are two crew points — at the start and at the finish in Zermatt — so runners are self-sufficient between those points. Pack your mandatory kit, know your nutrition plan for at least 4–6 hours of racing, and treat hydration seriously at altitude where dehydration accelerates without obvious sweat cues.
Fuelling for a High-Altitude 25 km
Despite covering only 25 km, the 3070 m of climbing and the metabolic demands of racing at altitude mean total calorie expenditure can rival a flat 50 km. Plan to take on 60–90 g of carbohydrate per hour from the gun. Given the steep, runnable-but-not-fast nature of the climbs, solid food (gels, bars, chews) typically sits better than liquid-only strategies — the pace is rarely high enough to cause GI issues from eating, but altitude can suppress appetite so forcing calories early is important. There are checkpoints at Furi (5 km), Schwarzsee (9 km), Hoernlihuette (12 km) and Trockener Steg (17 km), but carry enough to be self-sufficient between each given checkpoint support at mountain races can be variable. Start with at least 1 litre of fluid and refill at every opportunity above Schwarzsee.
Conditions to Expect in Late August
Late August in Zermatt sits at the tail end of the alpine summer, but at 3333 m conditions can change rapidly. Early morning temperatures at the start in Zermatt (1636 m) may be 8–14°C, but at the high point near Hoernlihuette the temperature can drop well below 5°C with wind chill, particularly if cloud rolls in off the Italian or Swiss ridgelines. Afternoon thunderstorms are a real risk in the Alps in August; the race organisers will be monitoring conditions but runners should be prepared for sudden weather changes above 3000 m. A waterproof jacket, gloves and a buff are not optional extras here — treat them as essential mandatory kit. Snow on the upper sections is possible even in late August if there has been a summer snowfall. The descent back to Zermatt is typically warmer and more sheltered, but by that point you will have been exposed on the high ridges for several hours.
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Checkpoints & cut-offs
⚠ Auto-researched from public sources — aid stations and cut-offs may be incomplete. Confirm against the official roadbook before race day.
0 km · 1636 m · —
4.5 km · 2626 m · Fri 09:30
12.8 km · 3240 m · Fri 12:00
27 km · 1629 m · Fri 16:00
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Course data researched from public sources — verify against the official roadbook.