Nestled in the breathtaking Bernese Oberland region of Switzerland, the INFERNO Triathlon stands out as one of the most challenging events on any athlete's calendar. Known for its grueling 5,500 metres of ascent, this triathlon is not just a race but an endurance test set against some of the world’s most iconic mountain peaks – Eiger, Mönch, and Jungfrau. Competitors are treated to panoramic views as they navigate through rugged terrain, challenging their physical limits while enjoying nature in its purest form. The event combines cycling, running, and swimming, each leg offering a unique perspective on this alpine wonderland. Cyclists wind through narrow mountain roads with hairpin turns, runners tackle steep climbs that test even the most seasoned athletes, and swimmers glide across pristine lakes surrounded by towering peaks. Beyond its demanding course, INFERNO is celebrated for fostering a strong sense of community among participants and spectators alike. The event attracts triathletes from around the globe who come not just to compete but also to immerse themselves in Switzerland’s rich cultural heritage and stunning natural beauty. With a family-friendly atmosphere that encourages support and camaraderie throughout, INFERNO offers an unforgettable experience for all involved. As athletes cross the finish line after pushing their bodies through this rigorous course, they are rewarded with memories of conquering some of the most awe-inspiring landscapes in Europe – making it clear why the INFERNO Triathlon remains a must-do event for any serious endurance sports enthusiast.
Races Offered
Inferno Couples
Aug 15, 2026
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Distance —
Inferno Couples
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Type —
Running
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1 days remaining
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Fr 650.00
Inferno Halbmarathon
Aug 15, 2026
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Distance —
21.1K
terrain
Type —
Running
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1 days remaining
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Fr 94.00
Inferno Staffellauf
Aug 15, 2026
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Distance —
21.1K
terrain
Type —
Running
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1 days remaining
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Fr 170.00
Inferno Team Trophy
Aug 15, 2026
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Distance —
147.1K
terrain
Type —
Running
timer
1 days remaining
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Fr 700.00
Inferno Triathlon
Aug 15, 2026
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Distance —
155.1K
terrain
Type —
Running
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1 days remaining
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Fr 630.00
Kids Run
Aug 16, 2026
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Distance —
Kids Run
terrain
Type —
Running
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1 days remaining
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Fr 5.00
Kids Run Familie 1
Aug 16, 2026
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Distance —
Kids Run Familie 1
terrain
Type —
Running
timer
1 days remaining
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Fr 20.00
Kids Run Familie 2
Aug 16, 2026
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Distance —
Kids Run Familie 2
terrain
Type —
Running
timer
1 days remaining
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Fr 25.00
Trail
Aug 16, 2026
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Distance —
8.4K
terrain
Type —
Running
timer
1 days remaining
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Fr 45.00
U12 Run Familie 1
Aug 16, 2026
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Distance —
U12 Run Familie 1
terrain
Type —
Running
timer
1 days remaining
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Fr 25.00
U12 Run Familie 2
Aug 16, 2026
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Distance —
U12 Run Familie 2
terrain
Type —
Running
timer
1 days remaining
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Fr 30.00
U12/U14 Run
Aug 16, 2026
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Distance —
1.3K
terrain
Type —
Running
timer
1 days remaining
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Fr 15.00
U16 Junior Trail Series
Aug 16, 2026
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Distance —
3.7K
terrain
Type —
Running
timer
1 days remaining
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Fr 15.00
U18 Junior Trail Series
Aug 16, 2026
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Distance —
5K
terrain
Type —
Running
timer
1 days remaining
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Fr 20.00
U20 Junior Trail Series
Aug 16, 2026
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Distance —
6.9K
terrain
Type —
Running
timer
1 days remaining
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Fr 25.00
Weather History
These values represent the 3-year monthly averages for August in .
thermostatTemperature
14.4° / 25.1°
wb_sunnyFeels like
14.3° / 25.0°
light_mode
Avg sunshine hours
11h 16m
water_drop
Avg rainfall
3.5 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
6.1 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (4.9)
humidity_mid
Humidity
72.3%
wb_twilight
Sunrise
06:28
nightlight
Sunset
20:38
Hotels & Places to Stay
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