Trail running course near Fieberbrunn, Tyrol, AT
KAT100 by UTMB

KAT100 by UTMB 81K

81K·Fieberbrunn, Austria
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Distance81K
Date6 Aug 2026
Difficulty4/5

About This Race

The 81K at KAT100 by UTMB serves as the technical middle distance in Austria's premier mountain running series, threading through the Kitzbühel Alps with the characteristic demands of Tyrolean alpine terrain. Based in the mountain village of Fieberbrunn, this race attracts runners seeking a substantial challenge that tests mountain craft and endurance without requiring the multi-day recovery of an ultra-distance event. The mixed terrain course reflects the varied character of the region, combining established trails with more technical sections that require focused footwork and route-finding skills. While specific elevation data isn't available, the Kitzbühel Alps are known for sustained climbing and exposed ridgeline running that demands respect and preparation. The UTMB designation brings the event's signature organization and competitive depth, drawing an international field to this corner of Tyrol each August.

Runners cover 81 kilometers through the Kitzbühel Alps on terrain that varies from groomed mountain paths to technical alpine sections requiring careful navigation. The course profile and specific elevation gain remain unconfirmed, though the region's geography suggests significant vertical challenge. Extended sections above treeline expose runners to alpine weather conditions and require self-sufficiency between aid stations.

Location

Practical Info

Weather

August in the Tyrolean Alps typically brings warm valley temperatures with cooler conditions at elevation, though mountain weather can change rapidly with afternoon thunderstorms possible.

Nearest Airport

SZG

Accommodation

Fieberbrunn offers mountain village lodging from hotels to guesthouses, with additional options in nearby Kitzbühel. Book early as the UTMB designation draws international entries.

Best For

mountain runnersultra runnerstrail running enthusiastsUTMB qualifiers

Notable Features

Part of the UTMB World Series, the KAT100 event brings world-class organization and international competition to the Tyrolean Alps. The 81K distance occupies the sweet spot for runners seeking serious alpine challenge with more manageable recovery than ultra distances, while the August timing offers the best weather window for high-altitude running in this region. Fieberbrunn's position in the Kitzbühel Alps provides access to some of Austria's most dramatic mountain terrain without the crowds of more famous alpine venues.

Other Distances at This Event

8K

250m gain

Perfect for families and trail running newcomers, this short course explores the beautiful valley terrain around Fieberbrunn. The gentle route offers stunning alpine views without demanding technical skills.

24K

The KAT100 by UTMB 24K runs through the Kitzbühel Alps in Austria's Tyrol region, based from the mountain village of Fieberbrunn. As part of the UTMB World Series, this race maintains the organization and course marking standards expected from the circuit while offering a distance that suits runners new to Alpine terrain. The August timing places the event in the heart of the Alpine summer season, when the high pastures are accessible and the mountain weather is most stable. The 24-kilometer distance fits between a long trail race and a short ultra, requiring more than quick legs but less than full ultra endurance. Runners moving up from road marathons or standard trail distances will find enough challenge to test their mountain skills without committing to 12-plus hours on course. The mixed terrain typical of the Kitzbühel Alps includes forest paths, alpine pastures, and rocky sections that demand attention to foot placement. Fieberbrunn sits in the PillerseeTal valley, a quieter alternative to nearby Kitzbühel that retains its working village character outside of ski season. The KAT100 weekend draws an international field through its UTMB affiliation, creating a focused trail running atmosphere without the overwhelming scale of larger circuit stops.

51K

The course traverses mixed terrain characteristic of the Kitzbühel Alps, combining forested singletrack, Alpine meadows, and exposed ridgeline sections. Runners navigate through classic Tyrolean landscapes, with the route likely featuring both sustained climbs and technical descents that require confident footing and mountain running experience. The August timing typically means dry, runnable conditions, though Alpine weather remains variable and runners should prepare for temperature fluctuations at higher elevations.

173K

The 173K route traverses the Kitzbühel Alps from Fieberbrunn, moving through a series of mountain passes and valleys that characterize this region of Tyrol. The terrain alternates between technical singletrack, wider alpine trails, and occasional jeep roads connecting high mountain huts. Sections of the course reach exposed ridgelines where runners encounter rocky, uneven surfaces requiring careful footing. The route shares many segments with the longer 200K course, providing a comprehensive tour of the region's geography. Runners pass through small mountain communities and alongside traditional alpine farming operations before returning to Fieberbrunn. The mixed terrain includes rooted forest trails at lower elevations and scree sections at higher points, with sustained transitions between altitude zones throughout the distance.