Mount Bonaparte Circumnavigation

Eastern WashingtonBest Jun–Oct

Full-mountain loop through Okanogan larch forest to the tallest peak in the highlands.

16 miDistance
2,999ftElevation
7,251ftHigh Point
Out & BackRoute
12h+Drive
moderateCrowds
Fair in rain

About This Trail

Mount Bonaparte stands as the tallest peak in the Okanogan Highlands at 7,250 feet, and this 16-mile loop circles the entire mountain with a summit visit included. The route strings together five numbered trails: Fourth of July Ridge, Cabin, Antoine, Bonaparte, and Southside. It follows an alternate section of the Pacific Northwest Trail and passes through old-growth western larch forest, historic cabin ruins, and a fire lookout tower with views that stretch across the highlands in every direction.

Water planning matters here. Antoine Creek has a sturdy bridge crossing, and Lightning Spring provides the first reliable water after the Antoine Creek drainage, but long dry stretches separate them. The Napol Cabin wreck and reportedly habitable Roggow Cabin add character to the route, and established campsites make this work as an overnight trip for those who want to slow down and explore.

The Okanogan Highlands feel different from the Cascades or the Selkirks. The country is drier, more open, with ponderosa pine and larch dominating the slopes. Wildfire has shaped this landscape repeatedly, and the forest shows it. The summit lookout tower (alongside a historic lookout cabin) delivers a panorama that earns the day's effort. From Tonasket, the trailhead sits about 20 miles northeast on forest roads that are generally well-maintained. A Northwest Forest Pass is required.

Astronomy

MoonWaning Gibbous (70%)
Stargazingexcellent

Trail Conditions

Scorecard

strikingBeautyOkanogan highlands rolling to the horizon from a fire lookout summit
Type 1.5Fun
2.5/5Difficulty
4/5Wildness
2/5Exposure
4/5Reward
4/5Effort

Safety & Considerations

Today's Hazard

  • Strong sun — sunscreen, hat, and sunglasses recommended

Persistent Hazards

  • long dry stretches between water sources
  • wildfire-prone area - check fire restrictions before visiting
  • 16 miles with 3,000 feet gain demands fitness

Getting There

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Parking

From Tonasket, drive northeast on Havillah Road (County 9467) for 15 miles to Forest Service Road 3230 (Mill Creek Road). Turn right and continue 4 miles to the Fourth of July trailhead on the left. Northwest Forest Pass required.

Approach

Most parties start at the Fourth of July Ridge trailhead and travel clockwise: Fourth of July Ridge (#307) to Cabin (#303) to Antoine (#304) to Bonaparte (#306) for the summit, then descend via Southside (#308) back to the start. Counterclockwise works too but puts the steepest climbing at the end.

Timing

Start by 7 AM for a comfortable day trip. The full 16-mile loop with summit takes 8 to 10 hours at a moderate pace. Carrying extra water is more important than starting at dawn.

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