Inferno Triathlon

INFERNO Triathlon

The INFERNO Triathlon, with its ascent of 5500 metres, is one of the toughest in the world and already ranks as a classic. The unforgettable encounter with nature in the incomparable Alpine world of the Bernese Oberland and the easy-going atmosphere make the INFERNO a most impressive challenge.  Top sport in the world’s most scenic setting: in front of the Eiger, Mönch & Jungfrau! Max. 333 participants.


Friday, 16 August 2019

  • 12.00 - 17.00 Check-in at the transition area Oberhofen (Road Bike), Grindelwald (Mountain Bike) and Stechelberg (Run)

  • 18.00 Athletes briefing in Mürren (strongly recommended)

Saturday, 17 August 2019

  • 06.30 Start Swimming at Lido Thun

  • 20.30 Close of finish on Schilthorn

The close of finish will be strictly adhered to for reasons of safety. Competitors who do not achieve the following intermediary times will be not be permitted to continue the race:

  • Transition area Oberhofen 08.15 Uhr

  • Transition area Grindelwald 13.15 Uhr

  • Transition area Stechelberg 16.30 Uhr

  • Alpine sports centre Mürren 18.00 Uhr

  • Schilthorntraverse (food supply station) 19.30 Uhr

Sunday, 18 August 2019

  • 12.00 Closing of the transition area Stechelberg


  • HK (main category) 2000 - 1985

  • AK1 (Age group 1) 1984 - 1975

  • AK2 (Age group 2) 1974 - 1965

  • AK3 (Age group 3) 1964 or older

Separate ranking lists will be issued for men and women. If fewer than three competitors are classified per category, the competitors will be ranked in the next lowest age group.

Entry fee

CHF 480.- for registrations till 19 July 2019
CHF 530.- for registrations from 20 July until 09 August 2019

Included in the entry fee: 2x return trips Stechelberg – Schilthorn by Schilthorn aerial cableway, 2 x Pasta-Party on 16 and 17 August 2019 in Mürren, 2 bustransfers Stechelberg - Thun (to the start and after the run) on 17 August 2019.


Prize money for women and men each:

  • 1. Rank CHF 1500.-

  • 2. Rank CHF 1000.-

  • 3. Rank CHF 750.-

  • 4. Rank CHF 500.-

  • 5. Rank CHF 250.-

Cash prizes will be awarded in accordance with the “overall classification”. If less than 10 participants are classified, the prize moneys for the 4th and 5th rank will not be pay off. If Tax will be deducted at source for participants from outside Switzerland.

The winners of each catergory will receive a souvenir prize. Men overall rank 6-10 and women 6th place and the three first-places in each category will receive natural prizes as well.
All finishers will receive a INFERNO Triathlon-Finisher-T-Shirt. Participants who must stop the race because of the time limits/closing times will receive a  INFERNO-T-Shirt.

Registratons and Deregistrations

We accept your registration starting from Sunday 3 March 2019 at 03:33 h.

Cancellations due to health reasons will be accepted on presentation of a doctor’s certificate. Refund of the entry fee will be liable to a CHF 50.- deduction for administration costs.

Competition rules

The INFERNO TRIATHLON is carried out in accordance with the Swiss Triathlon Federation (tri) rules under the supervision of the tri adjudicators. No slipstream running (drafting).

Since 2009 the Inferno Triathlon is licence required!  You can buy a 1 day licence (CHF 42.50) at the check-in.

The licence for a whole year can be ordered at Swiss Triathlon and allows you to start at every licence required run in Switzerland.

Doping is prohibited.  The Swiss Olympic Association is authorized to carry out doping tests.

Competition regulations (extraxt)

The INFERNO Triathlon is held in Alpine and partially high-Alpine terrain. High demands are made on the personal responsibility of competitors.
The following competition regulations apply (extract):

  • The organizers may make changes to the course at any time.

  • In case of change of the routing or canellation of the event due to force majeure the organizer is not obligated to refund the starting fee.

  • Doctors and adjudicators deployed by the organizers may exclude competitors from the race if a health risk exists.

  • A wet suit (Neopren) is obligatory for the swimming discipline. Neopren gloves or socks may not be worn.

  • The cycle route is open to other traffic. It is imperative that road traffic regulations are observed.

  • The highest demands are made on equipment and materials. The organizers reserve the right to exclude from the competition athletes with inadequate or poorly maintained equipment (cycles and helmets).

The complete competition provisions are included in the programme brochure, which all applicants will receive at the beginning of August.