A trek agency founded in 2005 and an eco-lodge opened in 2010, both independent, at the gate of Khao Yai National Park, a UNESCO-listed primary forest. TAT-licensed agency.
Used to running private groups in French and English, with year-round salaried guides and Cédric, co-founder and naturalist, as tour leader when needed. An organisation ready to slot straight into your existing programmes.
A complete product, trek, lodging, meals and transport under one management, with a single point of contact.
Les Collines Khao Yai is a family business, on a human scale. We never tried to grow fast: we grew step by step, on one simple conviction. A team that stays and truly cares matters more than a headcount that turns over.
Noey, Rung, Whisky, Tom, Nuj and Paeng are not simply staff to us. They are engaged, loyal people, some of them with us for years, who share the same values we do. That loyalty translates directly for your travellers: attention, time, a genuine ability to adapt each stay to the person living it, not just to the product sold.
Our ambition is simple, and we never phrase it any other way:
That their most beautiful memory of Thailand will be Les Collines Khao Yai.
It's this conviction, humble but held steadily since 2005, that has built our reputation.
Most of our guests come from our own reputation: word of mouth, loyalty, the Guide du Routard, our online presence. We also work regularly with several agencies and distribution networks, including those listed below.
What the jungle rarely lets you see. Visuals taken directly from our website and our documented wildlife database.
On the move, in the field
Instagram Reels @lescollineskhaoyai, click to watch
Up-to-date catalogue. Group rates, decreasing with size, shared with trade partners on request.
Our entry product: a full day in primary rainforest, no accommodation commitment. Suits travellers passing through from Bangkok or adding on to a stay elsewhere in Thailand. Gentle pace, suitable from age 5.
The entry-level stay at the eco-lodge: 2 nights on site, one full day of trekking. A good balance of comfort and immersion, suited to couples and families discovering Khao Yai for the first time.
An extra night inside the national park itself and a dusk safari clearly set this apart from Aventure. Audience: committed nature travellers, photographers, families used to hiking.
Separate from the property
Dedicated sites reserved for Les Collines, with restricted access through our own park ranger, not open to the park's standard catalogue or bookable by an independent visitor. This is what sets the Explorateur and Safari Premium programs apart from a simple forest-edge stay.
Our most complete program: gastronomy, culture (temple, blessing), local market and Thai cooking class alongside the naturalist component. A premium positioning for a demanding clientele wanting full immersion without giving up comfort.
Separate from the property
Dedicated sites reserved for Les Collines, with restricted access through our own park ranger, not open to the park's standard catalogue or bookable by an independent visitor. This is what sets the Explorateur and Safari Premium programs apart from a simple forest-edge stay.
Bangkok, Ayutthaya (4 temples and a boat ride), then the full Aventure program at Khao Yai, in a single private round-trip transfer. Ideal for a first stay in Thailand combining heritage and nature without multiple journeys.
The densest jungle immersion in our catalogue. Sleeping in a hammock at the heart of a jungle almost no one crosses, moving camp every day, following a swollen river into corners the dry season never reveals. 5 days, 3 nights of itinerant bivouac in the Ratchaburi jungle zone, a dedicated technical team of 4, resupply managed via the river (rainy season only, May to October).
A terrain also well suited to botanical and entomological observation: dense understorey flora, butterflies and rare insects rarely seen on Khao Yai's busier trails. A medical fitness certificate and liability waiver are required.
Typical schedule: Day 1 Bangkok (2-star hotel, briefing), Days 2 to 4 trek and itinerant bivouac (camp moves daily), Day 5 exit the jungle and return to Bangkok.
The four trekking programs have a decreasing price grid up to 20 people. Beyond that, up to 40 people on request (an established practice with school groups since before 2020), following the same decreasing logic.
Our programmes adjust to fit an existing itinerary.
Khao Yai module for itineraries
Adjustable from 1 to 5 days, to fit an itinerary in northern Thailand, Bangkok or Ayutthaya, or a simple round trip from Bangkok, with a single entry and exit point. Example: a Chiang Mai, Bangkok, Khao Yai circuit with a 2-day, 1-night stop before the return flight, without lengthening the overall trip.
School groups, associations and seminars up to 40 guests, on quotation. A well-practised routine since before 2020. See the school trips page
What a school gets
Khao Yai is about 2 hours' drive from Bangkok via the new highway, opening expected December 2026 (about 2.5 hours on the current route). Transport is part of the service, not a separate add-on to arrange yourself.
Included in the combined "From red to green" package (a single round trip, with a stop in Ayutthaya). Available as an add-on for other packages on request.
Paeng handles all field logistics during the stay: internal transfers, supplies, equipment support during expeditions.
Transport organised for up to 40 people on request, an established practice with school groups since before 2020.
An adapted vehicle can be arranged on request for guests with reduced mobility.
Through a partnership with 12Go, we can also sell train, bus and other tickets to and from Khao Yai directly, alongside our private transfers.
Source: DBD (Department of Business Development, Thailand) and TAT (Tourism Authority of Thailand).
Nothing is outsourced: the team that welcomes the final client is the same one that guides them, from start to finish of the stay.
How a jungle trek is actually organised
Studied political science at Thammasat University; trilingual interpreter (Thai, French, English).
Runs human resources, day-to-day logistics, bookkeeping and regulatory compliance (licences, filings with Thai authorities and the national park).
Direct point of contact for anything related to compliance and administrative follow-up of groups.
Field naturalist in Khao Yai since 2005. Former pharmacy technician and emergency paramedic, a rare medical background among jungle trek operators that shapes our on-the-ground safety approach.
Also handles business development, the design of new treks, and the digital presence (website, SEO, GEO).
Year-round presence, ongoing first-aid training like the rest of the team.
Extra support during high-activity periods.
Discreet, methodical, a sharp eye for reading tracks.
Our go-to French-speaking guide on the ground. Cédric steps in as tour leader depending on the group's needs.
Home-style Thai family cooking, halal and vegan options on request, plus home-made pastries.
On every piece of field logistics: transport, supplies and camp support during expeditions.
The full field team, on the trek
A rare feature among jungle trek operators, and a direct reassurance point for your clients.
Cédric Juilla was a pharmacy assistant and then an emergency paramedic before settling in Khao Yai.
He personally runs regular first-aid refreshers for the whole guide team.
The guide assesses and acts as first responder, with an immediate escalation to Cédric if needed. He himself stays in direct contact with the park rangers and local evacuation resources.
Resort and trekking agency under a single management: the client never has to deal with two separate providers.
Officially rated 3 stars (Agoda/Traveloka), but client satisfaction as measured on the platforms goes well beyond that price positioning. Guests are welcomed directly by the founders, not by rotating front-desk staff. Independent reviews often mention the warmth of Potjana's welcome, Cédric's availability throughout the stay, and Nuj's home cooking (halal and vegan options on request) as a satisfaction point in its own right, on a par with the trek itself.
Meals are prepared by Nuj, resident chef and permanent staff, who cooks home-style Thai family meals at every service. Breakfast is a home-made buffet: fresh pastries baked daily, fresh bread and jam, real coffee, cooked Thai dishes, eggs from the property's own chickens, organic tea from the north of the country.
The property, seen from above
The same guarantees we already apply, every day, in the field.
No sighting is ever guaranteed or sold as a promise. The park is home to over 400 wild elephants according to the NWA count, untrained and unfed. No baiting, no forced interaction, strict safety distances especially with elephants. It's a mark of authenticity, not a commercial guarantee, and this point deserves to be communicated clearly to end clients.
The client's group is never mixed with other participants. This format is also what makes the silence and discretion needed for wildlife observation possible.
Noey and Whisky on the front line, in French or English depending on the group, Cédric Juilla as second-level backup. This isn't conditional on season or availability, it's a structural part of how the agency operates.
Children accepted from age 5, many clients between 55 and 80 years old. Programs accessible to people with reduced mobility are built according to what the terrain allows.
Policy held with Mittare Insurance (No. 6104049043), covering each participant up to 1,000,000 THB in case of death and 500,000 THB in medical expenses. Full legal framework available on request via our partner terms and conditions.
Net partner rate across the whole grid, from base rates to group tiers up to 20 guests, then on quotation up to 40. Invoicing and payment terms to be defined together.
Each platform is independent, no score is aggregated across them. You can verify each one at the source.
Guide du RoutardRecommendedSince 2019
« Trekking simply PERFECT, UNIQUE and EXCEPTIONAL. » (translated from French)
Sandra Garrigues, verified Google review
« An extraordinary experience we'll remember for a long time. » (translated from French)
Pires Fizette, verified Google review
Write to us with your agency or school name, group size and planned dates. We will send you the partner file and access to the online area. A single point of contact, from first request to return.
info@lescollines-khaoyai.com
WhatsApp +66 65 207 6205
