RandoNav FR
Two hikers walking down an alpine meadow into low evening sun, a deep valley and ridgelines behind them

Some walks you plan for years.
We built something for that trip.

Not for hiking in general — for your trail. Where you can actually get a bed, what has to be booked and how far ahead, which kilometres are a scramble rather than a walk.

Free · no account · works offline · English & French

GR20 — Corsica

Corsica

GR20

The one people call the hardest in Europe

Granite, ridgelines and fifteen days of it. You sleep in park refuges you have to book, and the trail never really lets up — which is exactly why people come back.

  • 177 km
  • 11,340 m of climb
  • 26 places to sleep
  • Beds you can actually get We watch the park’s booking system and show you what is free, night by night — and tell you the moment a full refuge opens up.
  • It knows the rock Day estimates account for how technical the ground is, not just distance. On the GR20 that is the difference between six hours and nine.
  • No signal, no problem Maps, profile, GPS and your plan all work with the phone in flight mode.
Plan my GR20 → Trail guide & refuges Android app
Tour du Mont Blanc — France · Italy · Switzerland

France · Italy · Switzerland

Tour du Mont Blanc

Eleven cols, three countries, one mountain

You walk a full circle around Mont Blanc and it is never out of sight for long. Cowbells, glaciers, and a different language at dinner every few days.

  • 166 km
  • 10,400 m of climb
  • 3 countries
  • The refuges fill months ahead You can train for the climbing; you cannot train for a full hut. We re-check every refuge on the booking portal each hour and notify you the moment a night on your route frees up.
  • Half the loop is still a trek Only have a week? Take the west half to Courmayeur, or the longer east half through Italy and Switzerland — planned as a trek in its own right, not a circuit you abandoned.
  • Made for three countries Map, profile, GPS and your plan all work with the radio off — which matters on the days your phone is roaming outside the EU.
Plan my Tour du Mont Blanc → Trail guide & huts

What every planner gives you

Days that end somewhere real

Tell it your pace and how long you have. It splits the trail at actual huts — never at a round number of kilometres.

A bed, or a warning

Live availability per night, and an alert the moment a full one opens up.

Everything offline

Map, profile, GPS and your plan, all with the radio off.

A briefing each morning

The day’s climb, terrain, weather, and where the water is.

Paper and pixels

A PDF for your pocket, GPX for your watch, a link with a QR code for whoever is coming with you.

Nothing to sign up for

No account. Your plan stays on your phone.

Why a planner per trail?

You get one shot at this trip. It has its own rules — which places have to be booked and how far ahead, which kilometres are a scramble rather than a walk, where the last real shop is, when the high passes clear. None of that carries from one trail to the next, so we don’t pretend it does. Each planner learns a single route properly and keeps it current. Same engine underneath, a different mountain range in front.

From people who walked it

Finally, a trail app designed by someone who actually hikes! No sign-up walls, no bloated menus, just pure, fast navigation that loads instantly when you have zero signal.
Guillaume
The minimalist design is a breath of fresh air. On the trail my brain is fried and I just want to see where I am, how far the next refuge is, and the profile ahead. Nailed it.
Elena
Runs super smooth on mobile. Doesn't completely fry your phone battery either, which is usually the curse of web-based mapping tools in the mountains.
Thomas
The elevation tracking relative to where you actually are on the route is so well implemented. No more guessing 'is that final ridge the last one?' — you can see the reality on the screen.
Jeroen
Passed a couple of struggling hikers at the refuge who were wrestling with a messy paper map and a dying generic app. Showed them your site and they bookmarked it instantly.
Matthieu
If you're heading to Corsica or doing the Tour du Mont Blanc, scrap the heavy map apps and just keep a shortcut to these on your home screen. Absolute game-changer.
Sarah
No fluff, works offline when it matters, and keeps you on the right path. What else could a thru-hiker ask for?
Florian
Absolute perfection. Please make one for the Haute Route next!
Anouk
Used the GR20 app last week when the weather closed in near Bocca di Borgu and visibility dropped to about 5 meters. Unreal tool for this brutal terrain.
Mark
Brilliant tool! Would love an easy way to cache specific offline elevation chunks just to feel extra secure when heading deep into the Corsican interior.
Bram
Saved to my home screen before starting the GR20 north section. Never left home without it. 5 stars.
Chloe
Pulled up tmb.randonav.app on my phone, saw my blue dot right away, and realized I'd missed a turnoff. Worth its weight in gold.
Sanne
Used tmb.randonav.app to prep our stages before hitting the Alps, and it kept our group completely aligned on daily elevation profiles. Clean, precise, and straight to the point.
Martina
Super fast loading times even on weak 3G roaming in the French/Italian valleys. A small download option for offline GPX layers would make it the ultimate 10/10 tool.
Camille
Cleanest maps for the TMB I've used yet. Respect to whoever coded this.
Lars