The Legendary 'O' Circuit Traverse
Location: Torres del Paine, Chile
📅 Stage-by-Stage Itinerary Breakdown
Day 1: Laguna Amarga to Campamento Serón
13 kmGentle trek across wind-swept pampas dotted with wild daisies and grazing guanacos.
Day 2: Campamento Serón to Refugio Dickson
18 kmHugging Lake Paine alongside sheer limestone cliffs toward the Dickson glacier tongue.
Day 3: Refugio Dickson to Campamento Los Perros
12 kmDeep ancient lenga and coigüe beech forest ascent with hanging glacial moraines.
Day 4: Over John Gardner Pass to Refugio Grey
15 kmThe crux day. Strenuous 1,200m climb over Gardner Pass revealing panoramic vistas of Southern Ice Field.
Day 5: Refugio Grey to Paine Grande
11 kmSuspension bridge crossings over abyssal gorges, descending to Lake Pehoé.
Day 6: French Valley Ascent to Los Cuernos
17.5 kmClimbing into the natural amphitheater of towering horn-shaped granite formations.
Day 7: Los Cuernos to Chileno via Mount Almirante Nieto
14 kmTraversing alpine meadows skirting Lake Nordenskjöld with condors soaring overhead.
Day 8: Sunrise at Las Torres Tarn to Central
14.5 kmPre-dawn headlamp scramble to catch the first crimson light hitting the three granite towers.
🎒 Required Expedition Gear Checklist
Check off gear prior to trailhead departure. High-altitude and rainforest environments permit zero gear compromises.
- 4-Season stormproof expedition tent (tested up to 90 km/h gusts)
- Down sleeping bag rated to -10°C / 14°F
- GORE-TEX Pro 3-layer hardshell jacket and rain trousers
- Sturdy leather trekking boots with Vibram outsoles (broken in)
- Trekking poles with snow baskets
- Portable water filtration system (Sawyer Squeeze or Katadyn BeFree)
The ‘O’ Circuit is the ultimate test of trekking endurance in the Southern Hemisphere. While the popular ‘W’ Trek covers only the southern face, the full 130 km ‘O’ loops around the remote northern backside of the Paine Massif, where you encounter a fraction of the crowds and enter true sub-polar wilderness.