Hart’s Pass to Slate Peak

Hart’s Pass sits at 6,197 feet, marking Washington’s highest mountain pass accessible by vehicle, but the real prize lies three miles up a narrow, rocky spur to Slate Peak at 7,440 feet. This former military radar site and fire lookout perch offers unobstructed views of Mount Baker, Glacier Peak, and the jagged spine of the North Cascades. The final push to Slate Peak follows a single-lane track carved into loose shale and granite, with several exposed switchbacks where a wrong move means a very long tumble down scree slopes.

Difficult rating due to exposure and narrow margins for error, though the technical challenges are manageable for experienced mountain drivers. Stock 4WD with good tires handles it fine in dry conditions, but this route demands respect for weather changes and afternoon thunderstorms. Open roughly July through early October, with snow possible any time above 6,000 feet. No camping at Slate Peak itself, but primitive sites exist at Hart’s Pass. Bring layers — it’s 30 degrees colder up here than the Methow Valley floor, and the wind never stops. The views alone justify the pucker factor.