KAT100 by UTMB
KAT100 by UTMB – 100 Miles
Fieberbrunn
Race guide
Updated 19 July 2026
The KAT100 by UTMB 100 Miles is the flagship distance of the KAT100 by UTMB, a 169 km loop that starts and finishes in Fieberbrunn in the Austrian Tirol. With 8,894 m of positive climbing and a high point of 2,084 m, it is a relentlessly vertical mountain hundred-miler that strings together the peaks and valley towns of the Kitzbühel Alps rather than one long ridge. Starting at 783 m in Fieberbrunn, the route immediately throws you at altitude, drops into a chain of Tirolean villages — Hochfilzen, St. Ulrich am Pillersee, Waidring, St. Johann in Tirol, Kitzbühel, Jochberg — and repeatedly hauls you back onto the tops. Runners have roughly two days on their feet, with the final cut-off at Fieberbrunn on Saturday at 15:00. This is a race defined by the sheer number of full climbs, not by a single decisive pass.
The Course: A 169 km Tour of the Kitzbühel Alps
From the start line at 783 m in Fieberbrunn, the KAT100 100 Miles covers 169 km and 8,894 m of ascent before returning to the same town. The defining feature is its structure: the course keeps diving down into valley settlements and then climbing back to alpine checkpoints, so the vertical arrives in a long series of complete ascents and descents rather than sustained high-altitude running. Early on you pass Wildseeloderhaus at 1,871 m (10.2 km), plunge to Hochfilzen at 895 m (24.8 km), and roll through St. Ulrich am Pillersee (847 m, 40.3 km) and Waidring (797 m, 49.6 km). The middle of the race takes you over Kalkalmen (1,441 m, 59.9 km) and down to St. Johann in Tirol (656 m, 75.8 km), the low point of the day, before the big pull up to the Kitzbüheler Horn at 1,960 m (84.9 km). After descending into Kitzbühel (747 m, 94.2 km) the route heads over Pengelstein (1,913 m, 107.7 km), down to Jochberg (922 m, 124.7 km), then back up over Jochberger Wildalm, Hochwildalm (1,539 m, 149.5 km) and Lärchfilzhochalm (1,379 m, 160.7 km) before the final drop home to Fieberbrunn at 168.2 km.
Where the Race Is Won or Lost: The Decisive Climbs
The opening climb to Wildseeloderhaus gains more than 1,000 m in the first 10.2 km, taking you from 783 m to 1,871 m almost from the gun. Going too hard here — chasing the early cut-off of Thursday 21:00 — is the classic KAT100 mistake, because the race still has eight-plus major climbs to come. Treat this ascent as a warm-up to be walked steadily, not raced. The two pivotal climbs sit in the middle third. The haul out of St. Johann in Tirol (656 m) up to the Kitzbüheler Horn at 1,960 m is the single biggest sustained ascent on the course, roughly 1,300 m of gain, and it comes at 76–85 km when fatigue is setting in. Soon after, the climb from Kitzbühel (747 m) to Pengelstein (1,913 m) delivers another ~1,150 m. Manage these two back-to-back giants conservatively and you keep a buffer on the tightening cut-offs; blow up on either and the closing climbs over Hochwildalm and Lärchfilzhochalm become a survival march against the clock.
Pacing and Fueling Around the Cut-Offs
The KAT100 100 Miles is governed by a staircase of intermediate cut-offs from Wildseeloderhaus (Thu 21:00) all the way to the finish at Fieberbrunn on Saturday 15:00. Key gates to run toward are Waidring at 49.6 km (Fri 05:00), St. Johann in Tirol at 75.8 km (Fri 11:00), Kitzbühel at 94.2 km (Fri 16:30) and Oberaurach at 143.5 km (Sat 05:30). Because the course dives into towns so often, aid and support come at natural low points — build your race plan around reaching each valley checkpoint with margin, then spending it on the climb out. Crew points are limited to Waidring (49.6 km), Kitzbühel (94.2 km), Oberaurach (143.5 km) and the Fieberbrunn finish, so the gaps between crew access can span 40–50 km of rugged terrain. Carry enough food and fluid to cover two full climbs between those meetings, and use the village aid stations in between to top up. With two nights potentially in play, plan lighting and warm layers for the exposed high points like the Kitzbüheler Horn, Pengelstein and Hochwildalm, all of which sit well above 1,500 m.
Conditions to Expect
This is a high-alpine Tirolean course topping out at 2,084 m, and the profile repeatedly lifts you from warm valley floors around 650–900 m to exposed summits near 2,000 m. Expect large temperature swings between the villages and the tops, and be ready for cold, wind and potentially wet conditions on the high sections at night, even in an Austrian summer. The Kitzbüheler Horn, Pengelstein and the closing Hochwildalm–Lärchfilzhochalm high ground are the most exposed places to be caught out by a change in weather. Because the field is on course across two nights, plan for two darkness periods with fresh batteries and, ideally, a spare headtorch. The constant transition between valley heat and summit cold makes layering discipline — adding and shedding kit at checkpoints — a real performance factor. Runners who stay warm and dry on the high crossings and keep eating through the valley aid stations are the ones who make the final Fieberbrunn cut-off with something left.
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Checkpoints & cut-offs
✓ Course data verified against the official source (2026-07-17) · official source
0 km · 783 m · —
10.2 km · 1871 m · Thu 21:00
24.8 km · 895 m · Fri 00:00
40.3 km · 847 m · Fri 03:00
49.6 km · 797 m · Fri 05:00
59.9 km · 1441 m · —
75.8 km · 656 m · Fri 11:00
84.9 km · 1960 m · Fri 14:30
94.2 km · 747 m · Fri 16:30
107.7 km · 1913 m · Fri 20:30
124.7 km · 922 m · Sat 00:30
134.1 km · 1406 m · Sat 03:00
143.5 km · 874 m · Sat 05:30
149.5 km · 1539 m · Sat 08:00
160.7 km · 1379 m · Sat 12:30
168.2 km · 783 m · Sat 15:00
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