Evidence-based trekking research
If you are gonna do it,
Do it right
Independent guides to the world's great mountain ranges.
Planning-critical claims carry source links, update context, and correction history.
Destinations
33 destinations
Great Summits
Himalaya
Nepal
Everest, Annapurna, Langtang
Alps
Dolomites
Alta Via 1, via ferrata, Tre Cime, rifugio culture
Alps
Chamonix / TMB
Tour du Mont Blanc, Haute Route, Mer de Glace
Andes
Bariloche
Nahuel Huapi, Refugio Frey, Jakob, Laguna Negra
Andes
El Chaltén
Fitz Roy, Cerro Torre, Huemul Circuit
Himalaya
Pakistan (Karakoram)
K2 Base Camp, Concordia, Fairy Meadows
- Aconcagua
- Austrian Tyrol
- Grand Canyon
- Arches & Canyonlands
- Yellowstone
- Ladakh & Zanskar
- Domuyo
- Torres del Paine
- Cusco & Inca Trail
- Pyrenees
- Bernese Oberland
- Kilimanjaro
- Colorado 14ers
- Denali
- Hawai'i
- New Zealand Great Walks
- Japanese Alps
- Indonesia
- Krasnoyarsk Pillars (Столбы)
- Egypt
- Ojos del Salado & the Puna 6Ks
- Virginia Appalachians
- Lanín
- Huayhuash
- Iceland
- Benasque
- Interlaken
From the trail
First-hand accounts from the routes we research — photographed on the mountain, placed at the waypoint they happened.
Two lenticulars at first light
06:11, above the refugios. Sunrise put the whole lake district in silhouette and lit two lenticular clouds directly over the range.
Last light at the yellow refugio
Camp is at 2,400 m, on the Tromen side. The refugio is guyed to the rock with steel cable because the wind here does not negotiate — you can see the anchors running out of frame in both directions.
3,776 m, three hours forty after sunrise
09:52 on 2 November 2021. From first light on the slope to the summit was three hours and forty minutes.
Expeditions
You'll never walk alone.
Founding groups now forming — free, no commitment.
Late June – early July 2027
Alta Via 2 — Dolomites
November 2026 – February 2027
Torres del Paine — W Trek
July – August 2027
Austrian Tyrol — Hut to Hut
Flights
Fly the mountain before you book
Two routes rebuilt from the same public elevation data the maps use, as pages you scroll through. The camera climbs, the clock runs, and the surveyed line draws itself up the slope.
Fly this routeVolcán Lanín — Guided Ascent
Scroll the summit day hour by hour, 02:00 to 10:00. The sky lightens as you gain the cone, and the surveyed Tromen route draws itself up the slope as far as you have climbed.
Fly this route
Fly this routeAconcagua — Ruta 360 Traverse
Fly the 21-day traverse over the mountain's own elevation data, from the Vacas valley to 6,961 m and out by Horcones. The altimeter reads the camera's real altitude the whole way.
Fly this routeThe jtreks research digest
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Conquer the world’s greatest summits.
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Primary references
jtreks research cross-checks primary sources across government portals, geographic references, and peer-reviewed work.
- NTBNepal Tourism BoardNepal
- CNFCONAFChile
Parques NacionalesArgentina
SERNANPPeru
Club Alpino ItalianoItaly
Swiss Alpine ClubSwitzerland
Österreichischer AlpenvereinAustria- FFCFFCAMFrance
Tanzania National ParksTanzaniaDepartment of ConservationNew Zealand
National Park ServiceUnited States
- STISafeTravelIceland
NASA SRTMElevation data
USGSElevation data
OpenStreetMapTrail GPS data