Sea to Sky

The Sea to Sky is the drive that changes what kind of hiking you do. On the North Shore you are on a mountain that looks down at the city. Forty minutes further up Highway 99 you are in the Coast Mountains proper, the peaks stop being 1,300 metres and start being 2,600, and the consequences of a bad decision scale accordingly.

Átl'ḵa7tsem - Howe Sound - is the southernmost fjord in North America, and the corridor runs along its eastern shore before turning inland at Squamish. It is one of the great drives anywhere, and it is also a corridor rather than a destination: the good things are pullouts, trailheads and side roads off it, not the highway itself.

What the region is good for

Photography, more than anywhere else near Vancouver. The combination of water, granite and steep light does most of the work. Porteau Cove is the closest genuinely dark sky to the city. The pullouts between Lions Bay and Britannia catch alpenglow on the Tantalus Range across the water. Shannon Falls and the Stawamus Chief are the obvious stops and they are obvious for a reason.

Winter objectives with real commitment. Diamond Head and the Elfin Lakes route, Brew Hut, the Red Heather area - these are avalanche-terrain trips that need training and equipment, not extensions of a North Shore snowshoe.

Shoulder seasons. Squamish is drier and warmer than the North Shore and comes into condition weeks earlier. When Cypress is rotten snow in April, the Chief is dry.

Access notes

Highway 99 is the only route and it is genuinely hazardous in winter - winter tires are legally required, and the stretch from Horseshoe Bay to Squamish closes periodically for accidents and rockfall with no detour available. Check DriveBC before you commit; a closure means a four-hour wait, not an alternate route.

Most of the good trailheads are up gravel forest service roads that are not maintained in winter. The Diamond Head road to the Garibaldi trailhead is 16 km of rough gravel where BC Parks recommends 4x4 and chains are mandatory October through May.

BC Parks day-use passes apply at Garibaldi trailheads in summer - Diamond Head runs Fridays through Mondays and holidays, June 12 to October 12, 2026 - and not at all in winter. Drones are prohibited in every provincial park in the corridor.

Seasons

Season	Reality
Dec-Mar	Winter backcountry. Avalanche training required for anything above treeline. Low-elevation Squamish trails stay open.
Apr-Jun	Squamish valley trails dry out early; the alpine is still full winter until well into July.
Jul-Sep	Everything open. Peak crowds, day-pass season, and the corridor's best weather.
Oct-Nov	Quiet, wet, and the last of the alpine access. Excellent light, few people.