Le Bout du Monde (Sixt-Fer-à-Cheval)
Reykjadalur
Le Bout du Monde (Sixt-Fer-à-Cheval) vs Reykjadalur: Intensity Score Comparison
Both routes share a similar overall intensity (15 vs 16). Depending on personal strengths, the challenge relies more on Le Bout du Monde (Sixt-Fer-à-Cheval)'s technicality versus the physical output of the other.
Model-based (not a field report) · Evaluates overall route demand, not danger.
Translated literally as 'The End of the World', this spectacular 8km loop is located in the immense limestone amphitheater of the Cirque du Sixt-Fer-à-Cheval. Surrounded by towering 2,000-meter cliffs, this is a predominantly flat, welcoming walk that traces the Giffre river to its source. It is perfect for those seeking high-alpine drama without the grueling climbs usually required to find it. Note: Compiled from public sources — not a field report.
Reykjadalur translates to 'Steam Valley,' an aptly named geothermal area where a moderate hike leads to a naturally heated river. Located near the town of Hveragerði (approx. 45 minutes from Reykjavík), this 7.4km round-trip route is a popular destination for those seeking an authentic outdoor soak. The trail ascends through rolling green hills, passing active geothermal features including mud pots and steaming vents. At the end of the well-marked path, cold mountain water merges with geothermal streams to create a swimmable river with various temperature zones. Visitors typically spend time soaking in the warm currents before returning via the same route.
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