25 Humps Circuit: Download the ideal PDF map for safe hiking

In the field, nothing replaces areliable PDF map of the 25 hump circuit: With this adventure course, one quickly realizes that a good resource slipped into the bag, it is less detours and much more fun at each bump (some still leave time there because of an erased markup or an unexpected turn !).
Whether you are in family or looking for performance on the trail, choose theIGN card or adapted PDFcan transform your experience – and after twenty years of trips on the Three Gables, I saw that anticipation sometimes makes the difference between memories and bobos.
This little effort of preparation, that's what allows you to take full advantage and come back with new stories to tell.

Get in one click the reliable PDF map of the 25-hump circuit: all the options to succeed your hike

Want to avoid unnecessary back and forth in sandstone chaos? The essentials is one-page: to organize your hike or trail on the famous 25-hump circuit, it is best to leave with a reliable, new and detailed PDF map, to download now.
No more long hesitation between pro and free resources: the process is simple, you choose the card according to your need (IGN, free, GPX), and then you team up for a serene release.
This practical comparison immediately gives you an overview, and some regulars confirm that a good preparation simplifies everything, especially in unknown terrain.

Comparison table of PDF maps of the 25 hump circuit

Before you start, a simple principle – on the Three Gables, a reliable map surpasses the best GPS if the signal disappears.
Here is a concrete overview of the current resources, with their mobile printing and export solutions (It has already happened to finish the loop thanks to a simple paper print!).

Do you hesitate between free card and paid version? On this rugged journey, it is best to rely on IGN updates (2018and later) and altimeter profiles to identify ridges, bumps and variants, especially during fog passages.
A trace that would date could mislead you without warning.

Understanding the 25 bumps circuit in numbers: all you need to know before you leave

Take a moment to make an idea of the challenge: the 25-hump circuit brings together a loop of14 to 15.7 kmaccording to the route, with a positive elevation of about800 m(sometimes up to900 mon some GPS), for a hike of5-7 a.m.on foot or2-3 hoursIf you run.
The path evolves between121 m and 400 m altitude, through the rocky chaos of the Three Gables.
It's a trip that many hikers consider to be essential in their journey, and a local companion told me that even the most seasoned ones sometimes come out surprised by the difficulty and beauty of the site.
Is it really as spectacular as it is said? To see for yourself...

Access, parking and official departure points: well prepare the start of the course

The most frequent starting point is the parking lot of the Croix Saint-Jérôme (contact information mentioned on each IGN PDF map).
There is also the Diplodocus sector car park for the variant, or that of the Mare aux Fées and the Poteau de la Turelle.
On the main route, red markers (painted on rocks or trees) indicate the clockwise direction, but crosses require vigilance, especially for those taking the Diplodocus variant.
A panel announces the loop and key tips of the site.
Little anecdote: teen, I confused the marks and took the wrong branch... Some hikers are still laughing.

Do you prefer a paid IGN card or a free PDF? Analysis and criteria for an informed decision

The question frequently comes up: « Is the card to4,50 €Does it really change the deal? ».
The reality depends on the requirements and the context.
The free PDFs are largely sufficient for a confirmed walker, provided they benefit from the current route (since2018, some passages and variants have changed !).
But if you are looking for maximum safety or consider an off-season exit (snow, fog), IGN cards are an option.
Only the official package includes the certified route, the variations Diplodocus/35 bumps, the altitude profiles and the precise location of the bumps in case of fog.
A sportsman recently said that updates are particularly valuable in wet autumns.

To be chosen to guide your choice:

• 4,50 €for the IGN map: includes the 2018 update as well as the altitude profiles
• The free PDFs offer the classic route, perfect for a first attempt or a discovery exit
• IGN custom prints begin at17,90 €, which is relatively well suited to the formatA3for a team or group of leaders
• On the digital side, GPX/KML applications synchronize the journey on mobile: always check the export before leaving, it helps avoid bad surprises in the middle of the loop

In practice, it's like choosing between the previous compass and the state-of-the-art GPS: each adapts according to its own requirements, and an animator recently said that the right map remains what reassures the most novice teams.

Practical guide: print, prepare and synchronize your PDF map before departure

The PDF map is downloaded, but two questions are regularly waiting for hikers as soon as they arrive on site: how to print to read well in difficult terrain, and how to synchronize the route on mobile or GPS outdoor.
FormatA4folded is proven, but theA3or integration on Visorando or Komoot (GPX/KML of IGN site or other platforms) is often a real plus.
An experienced coach from Fontainebleau blew the trick: always save a copy on the phone before leaving.

Good reflexes adopted by enthusiasts:

• Recommended colour printing, useful weather plasticization
• Backup PDF on phone, battery charged (5 to 7 hours walkcan consume quickly!)
• Check the presence of the Diplodocus variant if you are preparing an extended trail or a team trip
• Photograph the starting signs: a simple cliché often serves the heart of the journey when the memory is flicky

It's the paper that helps in unexpected moments: some hikers remember to have finished the loop after a smartphone breakdown, and the story returns regularly in conversations on the ground!

Safety tips and preparation: anticipating difficulties before the walk

The course has nothing to do with a health walk.
Between rocky chaos and slippery passages, it is better to prepare seriously.
Bring2 litres of water, reinforced grip shoes, what to react to in case of a bobo (emergency bump) and a reliable recett to spot you if the weather changes abruptly.
Monitor the marking regularly, check the altitude profile on your map, notify someone of your itinerary.
Phones do not catch in places and the numbering of bumps is not always obvious, especially after the12th bumpon the Diplodocus variant.
Some industry guides point out that the slightest negligence can quickly turn the circuit into an unexpected event.

Points to observe for your safety:

• 800 m of elevationnever underestimate, even over short distance
• Starting early and adapting the rhythm to the group, this is frequently advised by the coaches
• On slippery or wet ground, a break all the5 bumpsbetter manage effort and risk
• Respect the areas and stay on the marked trails: to preserve the site is also to guarantee its long-term safety

We note that any unforeseen detour may addabout 30 to 60 minutesAt the exit.
It is often this kind of experience that forges the habits of anticipation, and a trainer told me that most groups remember it.

Practical FAQ: Answers to your questions on the PDF map and field navigation

Here are the elements to remove the last doubts before leaving.
The same questions are repeated on the circuit, and it is noted that each release brings a new tip, either solo or in a group (a regular in the valley recently cited the time savings associated with GPX synchronization).

Just like a reliable PDF card for the 25 bump circuit, good preparation is essential for akayaking in autonomy: expert advice for a successful adventure.

To vary your natural getaways, also discoverhikes around Lake Annecy: varied routes for all levels, perfect for immersion in exceptional landscapes.

To complete your preparation and avoid unforeseen events, take advantage of this guide onhiking the Rhune: a practical guide to successful ascent in the Basque Country.

What PDF card should you take?

The IGN card is required for variants or if you are looking for technical precision; The free PDF is enough for a discovery or family walk.
For4,50 €, the official version offers a strong performance, especially in wetlands.

Use red marking, instructions for use?

Trust the red markers, from the first to the twenty-fifth summit, always the map at hand.
When marks disappear (cut off, erase), GPS points or PDF markers become the key.
This is also why a professional usually recommends identifying some important milestones before departure.

Are all the variants on the map?

On the IGN map, yes – Diplomacus and the long variant 35 bumps are included.
The more generalist PDF guides accompany the classic route, sometimes without the detail of the altitude profile.

How to manage a loss situation?

Stay on marked trails, choose a known point of reference indicated on the map, or use the "return to vehicle" function on GPX apps if you are equipped.
Don't panic (it's not always obvious on the ground): one often encounters a hiker willing to help, and for some, being drawn from complicated situations is part of the fun!

Testimonials, feedback and tips from the field

A small anecdote will illustrate the point: Lucas (14 years old) closed his first big hike last year with the plastic IGN map, and from the17th bump, it guided the entire group thanks to the altimeter profiles of the PDF.
This kind of support becomes a real educational asset to initiate card reading.
Several regulars also point out that the Diplodocus passage appears clearly on the pay version, and the GPX synchronization on the phone has helped to avoid many lost compass mishaps.
Finally, nothing is worth experimenting on site: compare, exchange your tricks, that's how every exit becomes richer and safer.

Updated on 21 March 2026