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Experience the mountains differently, between Lake Geneva and the Jura

Guided hikes and one-off outdoor experiences in the Pays de Gex, the Jura and the Geneva basin. Professional guiding, field experience across four continents.

5.0 ★ from over 20 Google reviews  ·  Qualified Mountain Leader  ·  Professional liability insurance  ·  All levels

Next outings

RandOpéra

  • Vendredi 18 septembre 2026, 9h-12h
  • Dimanche 20 septembre 2026 9h-12h
  • Samedi 3 octobre 2026, 9h-12h
  • Vendredi 9 octobre 2026, 9h – 16h

Places limitées, sur inscription via la communauté WhatsApp dédiée de l’événement.

RandoSpa

  • Vendredi 2 octobre 2026 de 10h à 16h
  • Vendredi 16 octobre 2026 de 10h à 16h
  • Vendredi 30 octobre 2026 de 10h à 16h

Un vendredi tous les 15 jours, sous réserve des disponibilités de l’hôtel partenaire. Sur inscription via la communauté WhatsApp dédiée de l’événement.

RandoSpores

  • Jeudi 17 septembre 2026, 16h-19h
  • Dimanche 20 septembre 2026, 14h-17h
  • Mardi 22 septembre 2026, 10h-13h

Sorties dépendantes de la saison des champignons. Sur inscription via la communauté WhatsApp dédiée de l’événement.

See all our events

Our signature events

RandOpéra: a live opera performance in the open air during a WhyTrek hike

RandOpéra

A guided hike, then a live opera performance in the open air. The artist stays secret until the day itself.

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RandoSpa: a panoramic hike on the Mont d’Or in the Jura followed by a spa session

RandoSpa

Eat, move, unwind: a brisk hike, lunch and a spa session, co-organised with a four-star hotel and spa.

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RandoSpores: discovering mushrooms in a Jura forest

RandoSpores

A mycology and observation outing, instructive and good fun. Observation only.

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Four ways to head out with us

Why WhyTrek

  • A mountain leader who is trained, insured and reassuring
  • A hike built around you, at your own pace
  • Listening comes first: the day adapts to who you are
  • From family walks to sporting days: your mountain, your experience

They have hiked with WhyTrek

★★★★★

“An incredible afternoon of hiking with Julien. Passionate and cheerful, he loves passing on stories and knowledge.”

★★★★★

“An exceptional experience. A guide as passionate as he is attentive. His knowledge of nature is impressive.”

Alexandre Google review
★★★★★

“Julien has a real gift for storytelling: you learn as you go and the afternoon passes far too quickly.”

Ready for the adventure?

A family hike, a personal challenge, sports preparation, team building: let’s talk about your project.