Considered one of the most beautiful hikes in France, if not all of Europe, the GR 98-51 is a must-see for all lovers of hiking and stunning scenery. This trek through the Calanques connects Marseille to Cassis via challenging, often rocky trails, but with some of the most breathtaking views of the Mediterranean.
One of the most spectacular hikes in France
The hike traditionally begins on the Marseille side, heading toward the Madrague de Montredon or Luminy, depending on the section chosen. Very quickly, you leave the urban atmosphere behind and enter a different landscape: white rock, pine trees, trails, and the sea that appears between two bends. It’s not hard to figure out: just follow the red-and-white GR trail markers. However, the terrain requires proper hiking shoes, water, and a reasonable level of fitness.

The Calanques National Park divides the crossing into several major stages. The Mont Rose–Luminy section follows the GR 98-51 trail to the Col de Morgiou, covering 16.6 km with an elevation gain of over 800 m. The Luminy–Cassis section, also classified as “very difficult,” crosses the heart of the Calanques for about 14.6 km before reaching the port of Cassis.
The route is very varied, shifting from a dry trail through the garrigue to a section along the cliffs, then offering views of Sormiou, Morgiou, Sugiton, or En-Vau. The GR doesn’t always descend all the way to the beaches, but it often lets you see them from above, with that crystal-clear blue water that makes you want to take a dip.

The section around the Devenson is one of the most impressive stretches. The trail winds high above, with the sea far below, and it’s easy to see why this hike is often cited as one of the most challenging in the Calanques. The GR 98-51 isn’t the easiest hike in the South, but it offers a true sense of adventure—without ever leaving France—thanks to this rare blend of sea, cliffs, and wild trails.