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
Our signature events

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

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

RandoSpores
A mycology and observation outing, instructive and good fun. Observation only.
Four ways to head out with us
- Day hikes : from two hours to a full day, with a guide of your own.
- Micro-adventure trips : from 2 to 12 days, accommodation and guiding included.
- Corporate outings and team building : a tailor-made guided day for your teams, from the first idea to the day itself.
- Advice and preparation : GR20, trekking, a sporting challenge, get your project ready.
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.”
“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.