Wildstrubel by UTMB®
Wildstrubel by UTMB® – Wild 110 Crans-Montana
Crans-Montana
Race guide
Updated 18 July 2026
The Wild 110 Crans-Montana is the flagship distance at Wildstrubel by UTMB, a 113 km alpine loop from Crans-Montana carrying a serious 6,222 m of climb and reaching a high point of 2,790 m. Starting and finishing in the Valais resort, the route crosses high passes and descends deep into the valleys on both sides of the Wildstrubel massif, linking Leukerbad, Kandersteg, Adelboden and Lenk before the final climb back over the top. With more than 6,000 m of vertical and repeated crossings between valley floors near 1,070 m and passes above 2,300 m, this is a mountain hundred that demands genuine alpine endurance, climbing legs and a plan for a long night out. It is the true test of the Wildstrubel by UTMB weekend and rewards runners who respect the size of every climb.
The course and terrain
The Wild 110 is a 113 km loop that leaves Crans-Montana at 1,498 m and returns to 1,499 m, gaining 6,222 m along the way – an average of over 55 m of climb per kilometre. The route is built from a sequence of big, distinct climbs and descents rather than gentle rolling: Varneralp (12.9 km, 2,224 m), down to Leukerbad (22.9 km, 1,384 m), up to Gemmipass (27.6 km, 2,340 m), down to Kandersteg (43.7 km, 1,172 m), then over to Adelboden (60.1 km, 1,338 m) and Lenk (78 km, 1,069 m). From Lenk the course climbs again through Iffigenalp (86.4 km, 1,587 m) to Cabane Wildstrubel (92.1 km, 2,786 m) – the point near the 2,790 m high point – before descending to Barrage de Tseuzier (102.8 km, 1,778 m) and finishing back at Crans-Montana. The repeated 1,000–1,200 m valley-to-pass swings define the terrain: there is no such thing as a flat section on this loop, and each descent to a valley town is followed by another major ascent.
Where the race is decided: the passes and the final climb
Two features shape the Wild 110. The first is the early one-two of Varneralp (2,224 m) and Gemmipass (2,340 m), separated by the plunge to Leukerbad. Runners who attack these high crossings in the opening 30 km often find the middle of the race – the long valley links through Kandersteg, Adelboden and Lenk – far harder than expected. The second and most decisive feature is the climb to Cabane Wildstrubel at 92.1 km and 2,786 m, essentially the roof of the course at 2,790 m, reached after more than 90 km and 5,000-plus metres of prior climbing. That late haul from Lenk (1,069 m) up through Iffigenalp to Cabane Wildstrubel is roughly 1,700 m of gain arriving on deeply fatigued legs, and it is where the race is truly won or lost. Survive it and the descent to Barrage de Tseuzier and the final push to Crans-Montana are manageable; misjudge your effort earlier and this climb becomes a very long, cold ordeal.
Pacing and fuelling with the cut-offs
The Wild 110 uses a chain of hard cut-offs that tighten as fatigue sets in: Leukerbad (22.9 km) at Sat 03:15, Kandersteg (43.7 km) at Sat 08:00, Adelboden (60.1 km) at Sat 13:15, Lenk (78 km) at Sat 18:30, Iffigenalp (86.4 km) at Sat 21:00 and Barrage de Tseuzier (102.8 km) at Sun 02:45. The early Leukerbad gate after the first big crossing means you cannot afford a slow, tentative start – yet you also cannot blow up before Cabane Wildstrubel. Aim to build a cushion by Kandersteg and hold it through the valley links. Aid and crew access follow the valley towns: Leukerbad, Kandersteg, Adelboden, Lenk and Barrage de Tseuzier are all crew points, so plan resupply and any kit changes around them. The most committing carries are the high, unsupported sectors – the Gemmipass crossing between Leukerbad and Kandersteg, and above all the long climb from Lenk over Iffigenalp to Cabane Wildstrubel and down to Tseuzier. Leave Lenk fully stocked with food, fluid and warm kit, because the highest and coldest part of the course comes immediately after it.
Conditions to expect
This is a high alpine race with an overnight component. The cut-off pattern shows runners moving through Leukerbad in the small hours of Saturday morning and reaching Barrage de Tseuzier as late as early Sunday, so much of the field is on the mountain through the night and over the 2,790 m high point at Cabane Wildstrubel in the dark and cold. Temperatures at the passes can be dramatically colder than in the valley towns, and weather on the exposed high ground around Gemmipass and Wildstrubel can change fast. Pack for the full range: warm layers and a headtorch for the high, cold, night-time sectors, and be ready for repeated big elevation swings between valley warmth and alpine cold. With crew points at every major valley town you have regular chances to adapt, but the long climbs to Gemmipass and Cabane Wildstrubel commit you to sustained time up high. Treat the final ascent to Cabane Wildstrubel as the crux and manage the whole first 78 km to arrive at Lenk still able to climb.
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Checkpoints & cut-offs
✓ Course data verified against the official source (2026-07-17) · official source
0 km · 1498 m · —
12.9 km · 2224 m · —
22.9 km · 1384 m · Sat 03:15
27.6 km · 2340 m · —
43.7 km · 1172 m · Sat 08:00
49.5 km · 1743 m · —
60.1 km · 1338 m · Sat 13:15
69.4 km · 1975 m · —
78 km · 1069 m · Sat 18:30
86.4 km · 1587 m · Sat 21:00
92.1 km · 2786 m · —
102.8 km · 1778 m · Sun 02:45
113 km · 1499 m · —
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