Overland route20 mi4,000 ft gaindifficulty: moderate

Hart's Pass and Slate Peak

RegionWashingtonAgencyU.S. Forest ServiceLast verified
Hart's Pass and Slate Peak — overland route near Mazama, Washington, Washington
Photo by Alan Schmierer via Wikimedia Commons (CC0)
Trail vitals7 facts
Length
20mi
Elev gain
4,000ft
Technical difficulty
Moderate
Direction
Out and back
Vehicle
High-clearance vehicle. The road is narrow and winding with cliff exposure but the surface is graded gravel — no technical obstacles. Trailers and RVs are not recommended.
Best months
Jul, Aug, Sep
Cell coverage
None on the road

Hart's Pass is the highest mountain pass in Washington at 6,204 feet and the highest maintained road in the state, climbing from Mazama in the Methow Valley to a Pacific Crest Trail crossing in the Pasayten Wilderness. The road continues 3 miles past the pass to the Slate Peak Fire Lookout at 7,488 feet, the highest drivable point in Washington. The road is Forest Service NF-5400, with about 12 miles of dirt past the end of pavement.

The road is narrow and windy with steep cliff drops in places, but the surface is graded gravel — no technical obstacles. Trailers and RVs are not recommended. Hart's Pass opens in early July as snow clears and closes again with fall snow in October. The road accesses one of the most popular Pacific Crest Trail trailheads, with through-hikers staging from the pass.

Hazards

Read before you go

  • Snow closure. Late October through June or early July most years.
  • Cliff exposure. Narrow road with significant drops on outside corners.
  • Lightning. Slate Peak's exposed ridge attracts thunderstorms. Plan to be down by afternoon.
  • No cell coverage.
  • No trailers or RVs. The road's curves are too tight.
  • Wildlife. Black bears, mountain goats, mule deer.
  • PCT hiker traffic. Especially late August through September during through-hiker push.
  • Wilderness boundary. No motorized access into the Pasayten.

Location

20 mi · Overland route

Approx. location 48.722, -120.660

Trail facts

5 fields
AgencyU.S. Forest Service
Nearest townMazama, Washington
Websitewww.fs.usda.gov/wildflowers/regions/Pacific_Northwest/HartsPass
ClosedNov, Dec, Jan, Feb, Mar, Apr, May, Jun
Approx. location48.722, -120.660

Getting there

Directions

From Winthrop, Washington on State Highway 20, drive north up the Methow Valley to Mazama. From Mazama, take Lost River Road (which becomes NF-5400) west and north for about 20 miles to Hart's Pass. Continue 3 miles past the pass to Slate Peak Lookout.

Approximate Hart's Pass coordinates: 48.722° N, -120.660° W.

Photos

2 photos

Photos · 2

Field notes

Getting Oriented

Hart's Pass crosses the Cascades on the border of Okanogan and Whatcom counties, 20 miles north of Mazama in the Methow Valley. The road sits in the Okanogan-Wenatchee National Forest, with the Pasayten Wilderness extending north from the pass to the Canadian border. Slate Peak's lookout, 3 miles further up, sits above 7,400 feet — the highest drivable point in Washington and one of the few staffed fire lookouts still in service.

Trail Overview

From Mazama, drive west and north up the Methow Valley to the Lost River trailhead area. Pavement ends about 8 miles up; the next 12 miles climb on graded dirt and gravel. The road's character is steady — narrow, with cliff exposure on outside corners — but the surface is good for the elevation. Trailers and RVs handle the climb poorly.

The pass itself sits in subalpine meadow at 6,204 feet, with the PCT crossing the road. Most travelers continue 3 miles further to Slate Peak, climbing more switchbacks to 7,488 feet. The fire lookout sits at the top with panoramic views into the Pasayten Wilderness, the North Cascades National Park, and Canada. Total drive time from Mazama is 2 to 3 hours one-way.

Points of Interest

  • Hart's Pass. The 6,204-foot pass — Washington's highest. Pacific Crest Trail crossing.
  • Slate Peak Fire Lookout. 7,488 feet, the highest drivable point in Washington. Lookout often staffed in summer.
  • Hart's Pass Campground. Forest Service campground near the pass with vault toilets.
  • Meadows Campground. Second Forest Service campground in the area.
  • PCT trailheads. Multiple trailheads accessing the Pasayten Wilderness north and south.
  • Pasayten Wilderness boundary. No motorized access beyond the road.
  • Wildflower meadows. Late July through August. The pass is one of the best wildflower destinations in the Cascades.

Where to Camp

Hart's Pass Campground (near the pass) and Meadows Campground (a few miles below) both have vault toilets and no fees. Both are first-come and fill on summer weekends. Dispersed camping is allowed elsewhere in the surrounding national forest with the 14-day stay limit. Mazama has commercial RV parks and lodging.

Tips for a Safe and Enjoyable Trip

  • Travel July through September. The road is closed by snow most of the year.
  • Trailers and RVs are not recommended. The road's tight curves and elevation are punishing.
  • Watch for cyclists. The road is popular with gravel cyclists and the Slate Peak switchbacks are a common training climb.
  • Pacific Crest Trail through-hikers stage from the pass in late summer. Watch for foot traffic.
  • Carry water; campgrounds have no potable water.
  • Cell coverage is absent.
  • Stay on the road. The wilderness boundary is strictly enforced.
  • Lightning hits Slate Peak regularly in summer. Plan to be down by afternoon thunderstorm time.
  • Contact the Okanogan-Wenatchee National Forest's Methow Valley Ranger District at 509-996-4003 for current conditions.

Frequently asked

Common questions

How difficult is Hart's Pass and Slate Peak?
Hart's Pass and Slate Peak is rated moderate. The route runs 20 miles with 4,000 feet of elevation gain.
What kind of vehicle do you need for Hart's Pass and Slate Peak?
High-clearance vehicle. The road is narrow and winding with cliff exposure but the surface is graded gravel — no technical obstacles. Trailers and RVs are not recommended.
When is the best time to visit Hart's Pass and Slate Peak?
The best months are Jul, Aug, Sep. Avoid Nov, Dec, Jan, Feb, Mar, Apr, May, Jun.
Is there cell service at Hart's Pass and Slate Peak?
None on the road