More than 5,000 cyclists will ride through Squamish on Saturday, September 6, 2025, as part of the annual RBC GranFondo Whistler. Drivers should expect delays on Highway 99 between Murrin Lake and Whistler from early morning until late afternoon.
According to event organizers, rolling traffic closures and detours will be in place between 5:30 a.m. and 4:30 p.m. as riders travel from Vancouver to Whistler. Highway 99 will remain open in both directions, but motorists are urged to plan ahead, follow signs, and prepare for reduced speed limits of 60 km/h on some sections.
Squamish impacts
Cyclists are expected to pass through Squamish beginning mid-morning, with the heaviest impacts between 8 a.m. and 12:30 p.m.
- Murrin Lake Park to Squamish: Traffic lights will be flashing along Highway 99, with traffic control staff on site.
- Highway 99 at Cleveland Avenue and Loggers Lane: Traffic signals will be flashing. No access to Loggers Lane from Cleveland Avenue or Industrial Way. Drivers should use the Centennial Way underpass to reach Loggers Lane.
- Valley Drive to Depot Road: East–west crossings will be restricted or closed, with full closures at certain intersections. Impacts for Garibaldi Highlands traffic include:
- Scott Crescent northbound (north of Clark Drive)
- Mamquam Road westbound (west of Diamond Head Road)
- Garibaldi Way westbound (west of Tantalus Road)
- Depot Road westbound (east of Highway 99)
Times are as follows: - 8:00–8:30 a.m. – intermittent delays
- 8:30–10:30 a.m. – full closures (except Clarke Drive, which will remain open for hospital access)
- 10:30 a.m.–12:30 p.m. – intermittent delays
Detours include Clarke Drive for Valley Drive, Centennial Way instead of Loggers Lane, and Dowad Drive for Garibaldi Highlands access (with a U-turn at Depot Road for southbound travel). From Alice Lake Road to Function Junction, a counterflow system will be in place. Cyclists will occupy the northbound slow lane, while one lane in each direction remains open for vehicles. This traffic pattern will be active from 8:30 a.m. until 4:30 p.m.
Organizers urge caution
Event organizers say the temporary changes are necessary to keep both cyclists and drivers safe. “For the safety of everyone, motorists should expect some traffic pattern changes and delays throughout the day,” organizers said in a notice. “Thank you for your cooperation and for supporting the volunteers, spectators, and athletes who have trained so hard for this day.”
The 122-kilometre ride begins in Vancouver’s Stanley Park and finishes in Whistler Village. Drivers can check DriveBC for live updates or visit the District of Squamish website for local traffic advisories.
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