HikeMetrics
Global Hiking Index
HikeMetrics
Global Hiking Index
HikeMetrics // Comparison Engine
Route A

Grey Glacier and Lago de Grey

chile/patagonia
VS
Route B

Mount Fitz Roy (Cerro Fitz Roy)

argentina/patagonia

Grey Glacier and Lago de Grey vs Mount Fitz Roy (Cerro Fitz Roy): Intensity Score Comparison

Mount Fitz Roy (Cerro Fitz Roy) is unequivocally more demanding overall (+18 points). While Grey Glacier and Lago de Grey is a serious endeavor, Mount Fitz Roy (Cerro Fitz Roy) pushes the limits further, particularly regarding sustained physical exertion.

Model-based (not a field report) · Evaluates overall route demand, not danger.

Intensity Difference
+18 Mount Fitz Roy (Cerro Fitz Roy) is harder
Higher Physical Load
Mount Fitz Roy (Cerro Fitz Roy)
Higher Technical Seriousness
Mount Fitz Roy (Cerro Fitz Roy)
Greater Commitment
Mount Fitz Roy (Cerro Fitz Roy)
Overall HikeMetrics Score
Mount Fitz Roy (Cerro Fitz Roy)wins 6 of 8 metrics
2
Route A
6
Route B
chile/patagonia

Grey Glacier and Lago de Grey

STANDARD // RT
Full Route Report

Located inside Torres del Paine National Park in Chilean Patagonia. Starting with incredible views of Cuernos del Paine and Cerro Paine, the day hike to Grey Glacier and Lago Grey features stunning lake and mountain views throughout most of the trail. The 12 km trek is considered one of the easier hikes of the multi-day Torres del Paine W trek, beginning at Camp Paine Grande. The mostly flat and shaded sections offer captivating scenery culminating in a short rocky climb near the end to witness the massive Grey Glacier calving into the glacial lake.

argentina/patagonia

Mount Fitz Roy (Cerro Fitz Roy)

EXPERT // HAZARD
Full Route Report

The trek to Laguna de los Tres is one of the primary day activities in Los Glaciares National Park, providing a close-perspective view of the granite massif of Mount Fitz Roy (3,405m). The route follows an out-and-back trail through mixed forest and glaciated valleys, passing the Piedras Blancas viewpoint before the final ascent. The journey is defined by a significant transition from the low-lying valley floor to the high-alpine environment of the lagoon, which sits directly below the main peaks.

Head-to-Head Metric Analysis

Intensity ScoreHigher Overall Demand
27
WINNER45
Physical LoadMore Physically Taxing
30
WINNER46
Technical SeriousnessMore Technically Demanding
19
WINNER36
DistanceLonger route
12 km
WINNER21 km
Elevation GainMore vertical
300 m
WINNER850 m
Highest PointHigher summit
250 m
WINNER1,170 m
Duration
1 days
1 days
Hazard LevelMore accessible
STANDARD // RT WINNER
EXPERT // HAZARD
Crowd LevelLess crowded
4 / 5 WINNER
5 / 5
Remoteness
3 / 5
3 / 5

HikeMetrics Hazard Scale — Explanation

1
LOW // ACCESS
2
STANDARD // RT
3
MODERATE // CHLG
4
EXPERT // HAZARD
5
EXTREME // LETHAL

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
Route A // Hazard Verdict
Grey Glacier and Lago de Grey
STANDARD // RT
extreme winds: The wind coming off the Southern Patagonian Ice Field across Lago Grey can be forceful, sometimes blowing hikers off their feet.
cold exposure: Even in mid-summer, the ambient temperature near the glacier drops significantly.
Route B // Hazard Verdict
Mount Fitz Roy (Cerro Fitz Roy)
EXPERT // HAZARD
high wind exposure: Strong winds are common in the Fitz Roy massif, particularly in the afternoon. Gusts can make the final ascent unstable in exposed conditions.
lower limb strain: The final descent is steep and rocky, which can strain knees and ankles on the return journey.

Required Gear Comparison

Grey Glacier and Lago de Grey
Heavy windbreaker/hardshell jacketTrekking polesLayered clothingDaypack with snacks and water
Mount Fitz Roy (Cerro Fitz Roy)
Trekking poles for stability and knee supportDurable hiking boots with high-traction solesModular layering system (temperatures at the lagoon are significantly lower than in town)Technical windbreaker or hardshell layerReliable headlamp for pre-dawn startsHydration capacity of 2L (purification recommended for stream water)

Compare with Other Routes

argentina
Cerro Tronador (Refugio Otto Meiling)
MODERATE // CHLG
argentina
Huemul Circuit
EXTREME // LETHAL
argentina
Perito Moreno Glacier Trail
EXPERT // HAZARD
austria
Dachstein Krippenstein — The 5 Fingers & Alpine Shark
STANDARD // RT
austria
The Gaisalmsteig — Achensee’s Fjordside Path
STANDARD // RT
austria
Graukogel — Pine Forests & strenuous Ridges
EXPERT // HAZARD