Drive one of Washington’s most scenic routes with a location-aware audio guide that narrates geology, tribal history, and hydroelectric landmarks. The 144‑mile loop between Sedro‑Woolley and Winthrop takes about 4–5 hours and includes dozens of pullouts and optional hikes.
More ways to explore the area's outdoor wonders
You pull off Highway 20 at first light and the valley exhales: cold air, a ribbon of river, and peaks laced with last winter’s snow. The narrator begins—measured, local—guiding you past old-growth stands, across bridges over the blue-green waters of Diablo Lake, and up toward the jagged silhouette of Washington Pass.
Difficulty
easy
Duration
4–5 hours
Fitness Level
Minimal fitness required for driving; bring modest fitness for optional side hikes that range from short walks to multi‑mile alpine treks.
Wildlife
History
The region shows layers of human history from Okanogan and Methow tribal lands to 19th‑century fur trappers and settlers, and 20th‑century hydroelectric projects such as Diablo Dam (1930).
Conservation
The North Cascades contain rare old-growth stands and sensitive alpine ecosystems—stay on designated roads/trails, pack out waste, and obey seasonal closures to protect fragile habitats.
Reserve your spot on the North Cascades Self-Guided Driving Audio Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Download before you go
Download the Action Tour Guide app and the tour audio while on Wi‑Fi—once downloaded it works offline for the whole year.
Plan fuel and time
The route spans remote stretches with limited services—top off gas in Sedro‑Woolley or Winthrop and allow 4–6 hours including stops.
Bring layers
Temperatures swing from valley fog to alpine wind—wear breathable layers and a windproof shell for viewpoint stops.
Respect closures and passes
Purchase required park or forest passes ahead of time and check current road closures at the North Cascades or WSDOT sites.
Smartphone with Action Tour Guide app
Runs the audio guide and provides offline map cues—download tour ahead of time.
Layered clothing and waterproof jacket
Spring can still be chilly and wet at higher elevations; layers keep you comfortable across microclimates.
spring
Reusable water and snacks
Stops are frequent but services are limited—stay hydrated during long stretches of driving and short hikes.
summer
Binoculars or telephoto lens
Helps spot wildlife, distant glacial lakes, and serrated ridgelines from roadside pullouts.
fall