South Fork Skokomish River Trail

The South Fork Skokomish River Trail is a 3 km point-to-point trail in Washington State, United States, gaining approximately 330 m of elevation to cross Sundown Pass at 4,688 ft (1,429 m). Rated moderate-strenuous for its concentrated ascent, this NPS-managed route threads through old-growth forest before emerging onto open alpine ridgeline with panoramic views across Olympic National Park's southern range.

About the South Fork Skokomish River Trail

The South Fork Skokomish River Trail is a focused wilderness route administered by the U.S. National Park Service as part of Olympic National Park. Classified as a Regional Walking Network (RWN) route, this 3-kilometer trail runs from the southern park boundary up and over Sundown Pass, where it connects with the Sundown Lake Trail at its northern terminus.

The setting is quintessentially Pacific Northwest. The Olympic Peninsula is one of the wettest corners of the contiguous United States, and the Skokomish River valley that gives this trail its name reflects that abundance: lush old-growth stands of western hemlock, Sitka spruce, and Douglas fir form a near-continuous canopy in the lower elevations. As the trail climbs toward Sundown Pass, the forest thins and the terrain opens onto exposed ridgeline with dramatic views across the Olympic Range.

At just 3 km, this trail functions best as a through-route or linking segment rather than a standalone day destination. Most hikers reach it after walking the broader Lower and Upper South Fork Skokomish River trail system — which covers nearly 10 miles of river valley terrain — and use this final segment as the gateway to Sundown Lake and the high backcountry. The trail's efficiency is one of its strengths: in under two hours of walking, you move from dense lowland forest to an alpine pass with views that take a full day's hiking to reach on other peninsula routes.

Foot traffic here is light by Olympic National Park standards. The park's more famous corridors — the Hoh Rain Forest, Hurricane Ridge, the High Divide — draw the majority of visitors. Hikers willing to put in the approach miles to reach this quieter corner are rewarded with genuine solitude and old-growth wilderness character that is increasingly rare anywhere in the Lower 48.

Route Overview & Stages

The trail runs point-to-point from the Olympic National Park boundary to the Sundown Lake Trail junction at Sundown Pass. There are no significant side trails or junctions along the 3 km route. The terrain climbs throughout, with the steepest grade concentrated in the middle stage as the trail leaves the river valley and begins its push toward the pass.

The total route covers 3 km with approximately 330 m of elevation gain. A short descent on the far side of the pass connects to the Sundown Lake Trail. Most fit hikers complete the trail in 1.5 to 2.5 hours; allow longer if you are carrying a full overnight pack or stopping for extended photography at the pass.

Highlights & Points of Interest

• Sundown Pass (4,688 ft / 1,429 m) — The trail's defining moment. This high mountain crossing delivers unobstructed views across the southern Olympic Range, with layered ridgelines stretching north toward the park's interior peaks. On clear days, Mount Rainier is visible to the southeast.
• Olympic National Park Boundary — The transition from Olympic National Forest to Olympic National Park is marked on the ground and felt almost immediately: the forest becomes denser, less disturbed, and noticeably quieter on the park side of the line.
• Old-Growth Hemlock Stand — The lower kilometer passes through a grove of western hemlock that may be several centuries old. The canopy is thick enough to create perpetual shade even on bright summer days, with a forest floor carpeted in oxalis and maidenhair fern.
• Sundown Lake Trail Junction — The northern terminus of this trail connects to the Sundown Lake Trail, which leads to one of the most isolated backcountry lakes in Olympic National Park. Sundown Lake occupies a glacially carved cirque at approximately 4,700 feet.
• South Fork Skokomish River Valley Views — From the ridgeline approach section, elevated views open back down into the Skokomish River valley, revealing the full scale of the old-growth forest corridor below and the mountain walls that flank it.
• Alpine Wildflower Meadows — Open slopes just below Sundown Pass support a short-season wildflower display from late July through August: Indian paintbrush, lupine, and phlox are common on the exposed south-facing terrain.
• Roosevelt Elk Corridor — The entire South Fork Skokomish drainage is prime Roosevelt elk habitat. Early-morning and evening hikers encounter elk regularly in the lower forest sections and occasionally on the open ridgeline above.
• Rock Outcrops on the Upper Ridge — The final kilometer before the pass transitions from forest to open rocky terrain, with natural rest ledges that offer views and a taste of genuine alpine exposure in a compact, accessible package.

Best Time to Hike the South Fork Skokomish River Trail

Sundown Pass holds snow well into the hiking season. The single most important factor in timing your visit is snowpack, not weather — a perfectly clear day in early June still means post-holing through two meters of snow near the pass.

July: The trail typically becomes reliably accessible from early to mid-July, though hikers in the first two weeks may encounter lingering snow on the upper section near the pass. Wildflowers hit their peak by mid-July. Daytime temperatures in the valley reach 18–22°C, dropping to 5–10°C at the pass by evening. Rain is common even in July on the Olympic Peninsula — pack accordingly.

August is the single best month to hike the South Fork Skokomish River Trail. Snow is gone from all but the most sheltered north-facing gullies, temperatures are at their warmest, and daylight extends past 9 pm. Cloud cover is lower than in any other month, and stable clear spells often last several days. As of 2026, NPS Olympic reports that August trail conditions on the southern Olympic routes have been consistently strong, with good tread and reliable water sources throughout the corridor.

September is the second-best window. Foot traffic drops sharply after Labor Day while conditions remain excellent: 12–18°C in the valley, 0–8°C at the pass. Early-autumn light brings extraordinary clarity to the mountain views. Rain frequency increases through September, but stable spells remain common through the third week of the month.

October through June: Snow typically returns to Sundown Pass by late October and persists through June. Outside the July–September window, microspikes or snowshoes may be necessary, and route-finding becomes significantly more challenging.

Practical Information

Accommodation

The closest developed campground to the trailhead is Brown Creek Campground in Olympic National Forest, approximately 11 km from the Lower South Fork Skokomish Trailhead. Sites cost $15–20 USD (around €14–18 EUR) per night. Facilities include pit toilets and bear boxes but no showers or electrical hookups. This is a solid base for a two-day itinerary combining the lower valley walk with this upper section.

For backcountry overnight stays within Olympic National Park, the natural target is Sundown Lake, accessible via the Sundown Lake Trail from the pass junction at the end of this trail. NPS-designated backcountry campsites at the lake include a bear-wire system. Sites are awarded on a first-come basis for self-issue permits but fill early in August — plan to arrive at the trailhead by 7 am on peak-season weekends.

For lodge-style accommodation, Shelton (approximately 35 km east) has the nearest motels, running €60–90 per night. Hoodsport, closer to Hood Canal and the park's east-side entry points, offers smaller motel and vacation rental options at similar rates.

Getting There & Back

From Seattle (Seattle-Tacoma International Airport, SEA), the drive to the South Fork Skokomish trail area is approximately 130 km and takes 2.5 to 3 hours. Take US-101 south to Skokomish Valley Road, continue south, then follow Forest Road 23 for 9 miles before turning onto FR-2353 to reach the Lower South Fork Skokomish Trailhead. The road is paved for most of the route; the final section is unpaved gravel, passable by standard passenger vehicles in summer conditions.

No scheduled public transport serves the trailhead. The nearest transit hub is in Shelton, reached by Intercity Transit buses from Olympia. From Shelton, a private vehicle or taxi is required for the remaining distance. No formal shuttle service operates on this route, though informal arrangements through local outfitters are sometimes possible.

Because this is a point-to-point trail, hikers planning a one-way traverse need to arrange a vehicle shuttle between the Lower South Fork Skokomish Trailhead and the upper trail access point. Many hikers simplify logistics by walking out-and-back to Sundown Pass.

Permits & Fees

Two permit or fee requirements apply to most visits to the South Fork Skokomish River Trail:

• Northwest Forest Pass — $5 per day or $30 per year. Required for parking at the Lower South Fork Skokomish Trailhead. Purchasable through the Recreation.gov online store or from self-service dispensers near the trailhead.
• Olympic National Park Wilderness Permit — Required for all overnight stays within the park. Cost is $8 per person per night plus a $6 non-refundable reservation fee per trip. Day hikers do not need a Wilderness Permit for this section. Advance reservations via Recreation.gov are strongly recommended for August visits; self-issue permits are available at trail registers when quota allows.

No separate park entrance fee is charged at this backcountry trailhead. The standard Olympic National Park vehicle entry fee ($35 for 7 days) applies only when entering through a main fee station.

Gear & Packing List

The Olympic Peninsula's maritime climate demands more gear than a 3 km trail might suggest. Even on clear August days, conditions at Sundown Pass can shift from warm sunshine to cold rain within an hour. Pack with that variability in mind, not with the trailhead forecast.

Backpack: For a day hike, a compact trail pack handles this route well. The Salomon ADV Skin 12 is an excellent fast-and-light choice for confident hikers traveling light. The Salomon ADV Skin 20 adds capacity for a full-day kit — layers, food, 2L hydration, first aid — without significant weight penalty. For overnight trips continuing to Sundown Lake, step up to a capable lightweight 40L option: the Zpacks Arc Haul Ultra 40L keeps base weight minimal while carrying everything needed for a backcountry night.

Footwear: Mid-cut hiking boots with waterproofing are the right call here. Low-cut trail runners work in dry August conditions but leave feet wet when pushing through undergrowth on the lower trail after recent rain. Gaiters add meaningful protection on the brushy lower section.

Clothing layers: A waterproof shell is non-negotiable regardless of the forecast. Combine with a wool or synthetic base layer and a lightweight insulating mid-layer. Temperatures at Sundown Pass can approach freezing when cloud and wind arrive together, even in summer.

Navigation: Download offline topo maps (Gaia GPS or CalTopo) before leaving. Cell service is absent along the full route. Carry a paper map and compass as backup — the terrain above the forest line is straightforward, but pass crossings in low visibility require confident navigation.

Water and food: Water is available from the river and tributaries on the lower trail but scarce above the forest line. Carry a filter and at least 2L capacity. For calorie planning on a full day combining this trail with the longer lower Skokomish valley route, How Many Calories Do You Need Hiking a Full Day? provides a useful framework — the numbers are higher than most hikers expect for sustained mountain terrain. If you are researching ultralight pack options for Pacific Northwest wilderness, Best Ultralight Backpacks 2026: 7 Sub-1 kg Packs Tested covers the leading options across different load ranges.

Similar Trails You Might Like

The South Fork Skokomish River Trail suits hikers drawn to point-to-point routes with a clear payoff — a mountain pass, a connecting trail — and a preference for genuine wilderness over curated visitor infrastructure. If that profile resonates, the following US trails offer comparable rewards in different landscapes. The Clouds Rest Trail in Yosemite and the Panorama Trail deliver the same high-viewpoint satisfaction in California's Sierra Nevada. The Colorado Plateau canyon routes — South Kaibab Trail, North Kaibab Trail, and Hidden Canyon — offer wilderness character in a dramatically different desert setting.

Frequently Asked Questions

When is the best time to hike the South Fork Skokomish River Trail?

August is the optimal month. Sundown Pass is typically snow-free from mid-July through late October, making the core window July through September. August combines warmest temperatures, longest daylight hours, and the highest probability of clear summit conditions. September is nearly as good and significantly quieter. Always verify current conditions on the NPS Olympic website before departing, as snowpack timing varies meaningfully from year to year on the Olympic Peninsula.

How difficult is the South Fork Skokomish River Trail?

The trail is moderate to strenuous. At 3 km it is short, but the approximately 330 m of elevation gain concentrated into that distance produces a sustained climb with no meaningful flat recovery sections. Fit hikers who hike regularly will manage comfortably in 1.5–2.5 hours. Those newer to mountain terrain or carrying a heavy overnight pack should budget 3 hours and plan for regular rest breaks. The rocky final approach to Sundown Pass requires confident footing on uneven terrain.

How far can you realistically cover per day on this trail?

The trail itself is 3 km and typically completed in a single session as part of a longer day. Most hikers combine it with the lower South Fork Skokomish River trail, covering 18–20 km total — demanding but achievable for fit hikers in a long summer day. Hikers planning an overnight at Sundown Lake can split the approach over two days for a more relaxed pace, covering 10–12 km on day one and the pass crossing on day two.

Where can you stay overnight near the trail?

The most logical overnight for hikers using this trail is at Sundown Lake, accessible from the Sundown Lake Trail junction at Sundown Pass — the far end of this route. NPS-designated backcountry campsites at the lake require a Wilderness Permit ($8 per person per night). For car-based camping, Brown Creek Campground in Olympic National Forest is the closest developed site, approximately 11 km from the lower trailhead, at $15–20 USD (€14–18 EUR) per night.

Do you need a permit to hike the South Fork Skokomish River Trail?

Day hikers need only a Northwest Forest Pass for parking ($5/day or $30/year) — no additional trail permit is required. Overnight hikers within Olympic National Park must carry a Wilderness Permit ($8 per person per night, plus $6 reservation fee per trip). August permits fill quickly; book via Recreation.gov as early as permitted. No separate Olympic National Park entrance fee applies at the South Fork Skokomish backcountry trailhead access points.