Location and surroundings
Bastion Peak sits in the mountain country of southwestern British Columbia, in Canada, inside Area C (Pemberton Valley/Mount Currie/D'Arcy) of the Squamish-Lillooet Regional District. It belongs to the chain North American Cordillera > Pacific Coast Ranges > Coast Mountains > Southern Pacific Ranges > Garibaldi Ranges > Bastion Range.
At 2,213 m, it is the highest of the four named peaks in the Bastion Range and the range high point. The surrounding terrain is typical of the Coast Mountains: steep ridges, alpine slopes, and deep valleys shaped by heavy precipitation and winter snow. In this part of British Columbia, access and travel are usually governed by rugged relief rather than long distance.
Neighbouring peaks
The nearest named peaks and passes give a good sense of Bastion Peak’s position in the range. It is higher than Rampart Mountain and Moat Peak, but lower than several nearby summits to the northeast and southwest.
- Rampart Mountain — 2,004 m, 2.7 km SE
- Moat Peak — 1,991 m, 4.0 km SE
- Duffey Peak — 2,219 m, 9.8 km NE
- Twin Goat Mountain — 2,112 m, 9.8 km NE
- Mount Neal — 2,552 m, 11.2 km SW
- In-SHUCK-ch Mountain — 2,386 m, 12.1 km S
- Hibachi Ridge — 2,557 m, 12.2 km W
- Tszil Mountain — 2,377 m, 12.8 km NE
The nearest higher peak is Duffey Peak, 9.8 km to the northeast. That makes Bastion Peak a lower summit in a cluster of substantial Coast Mountains peaks rather than an isolated high point.
The view from the summit
From the summit area, the highest peaks within 25 km are part of the same broad mountain system and lie in several directions around Bastion Peak. To the southwest are Mount Weart at 2,835 m, 16.0 km away, Mount James Turner at 2,703 m, 15.7 km away, and Wedge Mountain at 2,903 m, 18.2 km away.
To the northeast are Mount Matier at 2,783 m, 14.9 km away and Slalok Mountain at 2,653 m, 13.8 km away. Also within range of a summit view are Tremor Mountain at 2,691 m, 24.7 km SW. These distances and directions show Bastion Peak as part of a high alpine skyline rather than a lone summit.
The range
Bastion Peak belongs to the Bastion Range, whose high point is Bastion Peak itself. The range has four named peaks, and Bastion Peak ranks first among them by elevation. In the wider regional hierarchy, the range sits within the Garibaldi Ranges of the Southern Pacific Ranges.
The Bastion Range is part of the mountain backbone of southwestern British Columbia, where ridges and peaks rise above forested valleys and alpine basins. Within that setting, Bastion Peak serves as the top summit of its small named range, even though higher mountains lie nearby in the broader Coast Mountains.
Climate and weather
Climate estimates from NASA POWER for 2001–2020 suggest that the summit is cold for much of the year. The warmest month is July, at about 7 °C, while the coldest is February, at about -10 °C. Mean temperatures above freezing at the summit are limited to June, July, August and September.
Precipitation in the surrounding area is about 1,550 mm a year. The wettest month is November, at about 235 mm, and the driest is July, at about 50 mm. In this part of the Coast Mountains, weather can change quickly, with rain at lower elevations, snow higher up, fog, wind, and poor visibility after frontal systems.
Best time to visit
The most practical window for visiting Bastion Peak is usually the short summer season, when the summit is above freezing in the climate estimates: June through September. Even then, snow patches, wet rock, and lingering winter conditions can remain on shaded slopes and in gullies.
July is the driest month in the surrounding area, so it often offers the best chance of firmer ground and less persistent rain. Outside the summer months, colder temperatures and heavier precipitation make travel more demanding, and snow travel or mixed conditions are more likely.
Nature and wildlife
The mountain lies in a classic Coast Mountains environment: lower slopes with dense forest, then subalpine scrub, open alpine meadows, rock ribs, and snowfields higher up. At this elevation, vegetation becomes sparse near the summit, with hardy plants adapted to wind, cold, and a short growing season.
Wildlife in this region can include mountain goats, black bears, deer, and smaller alpine species, though sightings depend on season and terrain. The wet climate supports lush forest below treeline, while the upper mountain is shaped more by snow, freeze-thaw cycles, and exposed rock than by plant cover.
Guides and organised ascents
For a mountain like Bastion Peak, a certified guide is sensible if you are not experienced with steep alpine terrain, route-finding, snow travel, and changing weather. In Canada, the national guide association is the Association of Canadian Mountain Guides, which is an IFMGA/UIAGM member. The national alpine club is the Alpine Club of Canada.
Examples of established guiding companies working in the mountains of Canada include Yamnuska Mountain Adventures in Canmore and Canada West Mountain School in West Vancouver. Guided trips usually depend on the number of days, group size, hut nights, and equipment needs. Visitors often also check local tourism offices in nearby mountain communities for current access and conditions.
Safety and preparation
Bastion Peak calls for solid mountain fitness, navigation skills, and preparation for steep, wet, and often remote terrain. In the Coast Mountains, the main hazards are rapid weather changes, cold rain, snow, poor visibility, slippery rock, and difficult descent conditions. Even in summer, the summit environment can feel much colder than valley temperatures suggest.
For emergencies in Canada, the mountain rescue number is 911, which dispatches search and rescue, including Parks Canada teams in national parks. Carry suitable clothing, a map and compass or GPS, and enough food and water for a long day, because travel in this terrain often takes longer than expected.
Interesting facts
Bastion Peak is the highest of the four named peaks in the Bastion Range, and it is also the range high point. Its nearest higher neighbour is Duffey Peak, 9.8 km to the northeast, at 2,219 m. That makes Bastion Peak just slightly lower than a nearby summit in the same mountain area.
Within 25 km, the tallest surrounding peaks include Wedge Mountain at 2,903 m and Mount Weart at 2,835 m to the southwest, plus Mount Matier at 2,783 m to the northeast. Bastion Peak therefore sits in a compact but high alpine setting rather than on the edge of the range.
FAQ
How high is Bastion Peak? Bastion Peak rises to 2,213 m.
Where is Bastion Peak? It is in British Columbia, Canada, in Area C (Pemberton Valley/Mount Currie/D'Arcy) of the Squamish-Lillooet Regional District.
What range is Bastion Peak part of? It belongs to the Bastion Range, within the Garibaldi Ranges of the Coast Mountains.
Is Bastion Peak the highest mountain in its range? Yes. It is the highest of the four named peaks in the Bastion Range and the range high point.
What peaks are closest to Bastion Peak? The nearest are Rampart Mountain 2.7 km SE, Moat Peak 4.0 km SE, and Duffey Peak 9.8 km NE.
Is there water on the way to Bastion Peak? In this alpine terrain, water is usually from snowmelt or runoff and should be treated before drinking. Carry about 1.5-3 litres for a day, more in warm weather or on a long route.
Will my mobile phone work on Bastion Peak? Coverage in the hills is patchy and depends on the operator. On open ridges it may be possible, while in valleys and behind ridges it often fails. 112 reaches emergency services over any available network, and maps should be downloaded before setting out.