winter
Bonanza Flat
Bonanza Flat offers a high-alpine adventure with 12km of groomed Nordic trails and 5 miles of groomed multi-use trails. At approximately 9,000ft, these trails aren’t for the faint of heart (or lungs), but those willing to make the effort are rewarded with unparalleled views and great snow winding through pines and spruces.
Although beautiful, Bonanza Flat is isolated, and adverse weather is possible. Users are encouraged to check weather conditions and come prepared for the worst.
Leashes required. Please note signs in areas. *Bloods Lake is a watershed area and dogs are not allowed on this trail.
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Transportation
& Parking
Although upper Marsac (HWY 224) is closed to public motor vehicles in winter, users can hike, ski, or bike in the 0.5-mile, 600-vertical-foot section from the closed winter gate (Mid Mountain Trailhead) to Empire Pass.
New for winter 2025-2026 is the Bonanza Winter Shuttle, which runs Fridays, Saturdays, and Sundays, 8:45am – 4:45pm, December 19th through April 19, 2026 (weather permitting). The Shuttle picks up a few steps from the Montage stop on the 9 Purple Bus line, and is timed to align with the bus schedule, making for a no-wait transfer. More details on the shuttle can be found here: Bonanza Winter Shuttle Webpage
The shuttle can accommodate up to 11 passengers, four fat-tire bikes, cross-country gear and snowshoes and dogs (permitted with muzzles). Local buses can also accommodate dogs, skis, and bikes as room allows.
On days when the shuttle is not running, users can still ride the 9 Purple bus to the Montage and make the trek as described above. Those who choose to hike, ski, or bike up Marsac must be vigilant and aware of icy conditions, drop-offs, and motorized traffic.
Bonanza Flat
Blood's Lake
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