Circuit des 25 Bosses
Porthcurno to Land's End
Circuit des 25 Bosses vs Porthcurno to Land's End: Intensity Score Comparison
Both routes share a similar overall intensity (48 vs 49). Depending on personal strengths, the challenge relies more on Circuit des 25 Bosses's technicality versus the physical output of the other.
Model-based (not a field report) · Evaluates overall route demand, not danger.
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.
This scenic 6.5-mile (10.6km) point-to-point hike along the South West Coast Path links the iconic white sands of Porthcurno with the absolute westernmost tip of England: Land's End, often continuing slightly further to the huge surfing beach at Sennen Cove. It is a walk defined by dramatic granite cliffs, hidden coves, and the relentless pounding of the Atlantic Ocean. You will pass the spectacular jutting headland of Treryn Dinas (home to the precarious Logan Rock), drop into tiny sandy inlets like Porthgwarra (famous from Poldark), and finally arrive at the striking sea stacks off Land's End.
Head-to-Head Metric Analysis
HikeMetrics Hazard Scale — Explanation
The HikeMetrics Hazard Scale is a proprietary 5-point classification system that evaluates hiking routes across five dimensions: physical demand, technical complexity, altitude exposure, weather risk, and rescue accessibility.
Unlike generic star ratings, the Hazard Scale is calibrated against altitude profiles, elevation gain per day, and logistical isolation factors — making it the most precise route classification system available.
Full Scale Documentation