Circuit des 25 Bosses

The 'Circuit des 25 Bosses' (The 25 Bumps) is located in the Massif des Trois Pignons, on the western edge of the Forêt de Fontainebleau. Originally established in the 1970s as a training ground for alpinists, this technical 16km loop remains one of the most demanding day hikes in the Île-de-France region. The trail requires hikers to cross 25 distinct sandstone ridges, involving frequent scrambling over boulders and navigating deep sandy paths. It is an intense physical challenge characterized by constant elevation changes and a unique ecosystem of maritime pines and white sand dunes. Note: Compiled from public sources — not a field report.

The Wilderness Coast Walk is a remote, point-to-point coastal trek of roughly 100 km, linking the Merrica River trailhead in South East NSW (Nadgee Nature Reserve) to Mallacoota Inlet in Gippsland, Victoria (Croajingolong National Park). The route traverses expansive sand dunes, sandstone headlands, and coastal heathlands along the Tasman Sea, with optional extensions to Green Cape. Navigation relies on tidal windows and topographic cues, as much of the track is unmarked. The walk passes through critical habitats for species such as the White-bellied Sea Eagle. Permits are required from NSW National Parks & Wildlife Service and Parks Victoria.