Tour du Mont Blanc vs GR20: Which European Trek?
The Tour du Mont Blanc and the GR20 are the two most famous long-distance treks in Western Europe, and they are natural alternatives for trekkers planning a 10–15 day mountain walk. They could hardly be more different in character.
This comparison breaks down difficulty, scenery, huts and scrambling to help you choose.
Difficulty and Terrain
The TMB (~170 km, 10–11 days) is moderate — well-graded trails, no scrambling, suitable for any fit walker. The GR20 (~180 km, 12–15 days) is strenuous — sustained hands-on scrambling, exposed slabs and route-finding, widely called the hardest long-distance trail in Europe.
If you want a challenging but non-technical alpine circuit, choose the TMB. If you want a genuine mountaineering-grade trek with scrambling and exposure, choose the GR20.
Scenery and Huts
The TMB crosses three countries (France, Italy, Switzerland) with glaciers, alpine meadows and the finest staffed-refuge network in the world. The GR20 stays within Corsica, with granite cirques, Mediterranean forest and simpler PNRC refuges.
The TMB is busier and more developed; the GR20 is wilder and more committing. Both require booking refuges in advance for peak season.
Frequently asked questions
- Which is harder, the TMB or the GR20? The GR20 is much harder — sustained scrambling and exposure, widely called the hardest long-distance trail in Europe. The TMB is moderate, with no scrambling, suitable for any fit walker.
- Which is better for a first long-distance trek? The TMB. It is well-graded, well-served by refuges and within reach of any fit walker. The GR20 demands mountain experience and a head for heights.
- How long are they? The TMB is ~170 km over 10–11 days; the GR20 is ~180 km over 12–15 days. Similar in length, very different in difficulty.
Morocco Trekking Tours — A hut-to-hut alternative in a drier, quieter range.