The GR52 (Grande Randonnée: Panoramique du Mercantour) runs 212 km (132 mi) through the alpine environment of the Parc National du Mercantour from Colmars to the Italian border at Colle di Tenda
. This section covers the Moulinet to Sospel segment.
This portion of the GR52 starts in Moulinet. The first 3.2 km (2 mi) is a moderate 7% climb along forest road through a heavy hardwood forest. At that point, you'll see the entrance to a singletrack at the left (follow the GR52 signs). The singletrack is narrow, at times technical, and perched along the side of the mountain at about 1000 m (3400 ft) elevation. There are some great views of the la Bevera Valley from this stretch, and also some exposure.
Starting at the 6 km (3.7 mi) mark, the trail begins descending steeply among a loose rock field. Unless you've developed the capability to hover, expect to hike-a-bike/rock scramble down part of the next 1 km (0.6 mi) or so. The trail then levels out for a while before resuming the descent, still with an expert character.
At 8 km (5 mi), you'll cross an ancient stone bridge over la Ruisseau de Cuous (river). A narrow, twisting, technical, and at times muddy singletrack roughly follows the river until you reach the D2566 provincial road. This will take you back into Sospel.