Lost Coast Trail: A Backpacking Guide for King Range

The Lost Coast Trail is a 25-mile coastal backpacking route in Humboldt County, California, administered by the Bureau of Land Management's King Range National Conservation Area. It runs from the Mattole River mouth — the northern terminus, near Petrolia — south along black sand beaches and rocky headlands to Black Sands Beach at Shelter Cove. This stretch of the California coast was bypassed by Highway 101 when engineers determined that the terrain of the King Range made coastal road construction impractical. The highway went inland, and this section of shore was left to the fog, the bears, and anyone willing to carry three days of food and a tide table.

The King Range constitutes the steepest coastal relief in the contiguous United States. King Peak reaches 4,087 feet approximately three miles from the shoreline — a gradient that discouraged settlement, logging infrastructure, and highway construction alike. The result is one of the most remote sections of accessible shoreline in California, and the region from which the phrase "Lost Coast" derives. The name is informal; the coast has not actually misplaced itself.

Most through-hikers travel south from the Mattole Trailhead to Black Sands Beach at Shelter Cove, placing the prevailing northwest wind at their back for the majority of the route. The full distance is approximately 25 miles one-way; the majority of parties complete the trip in three to four days, which Lady Humboldt considers the appropriate pace for a route that spends considerable time on soft, yielding beach sand and offers no reliable elevation to look forward to.

The Mattole Trailhead sits at the end of Lighthouse Road, approximately 35 miles from Ferndale via Petrolia and the Mattole Road. The approach on Mattole Road is narrow, slow, and subject to the same coastal conditions as the trail itself — one does not hurry toward the Lost Coast so much as arrive at it gradually, by degrees. Black Sands Beach is reached via Beach Road in Shelter Cove, itself approximately 25 miles west of Garberville via Briceland-Thorne Road and Shelter Cove Road, descending into the SoHum hills with what can charitably be described as confidence in the driver's attention.

Shuttle logistics present the standard backpacking calculus: two vehicles, one left at each terminus; a pre-arranged shuttle service; or coordination with other parties. BLM's King Range office maintains a list of licensed shuttle operators for the current season (BLM King Range, 2025). No shuttle currently serves both ends by public transit, which should surprise no one who has studied a map of where these roads go.

The route contains no established campgrounds in the conventional sense — there are no established hearths, picnic tables, or designated tent pads. Camping occurs on beach flats and in creek-side clearings as conditions permit, with all food and scented items stored in a BLM-required bear canister each night. The following table lists the primary waypoints with approximate southbound mileages and water sources. Mileages follow BLM King Range planning materials (2025); precise values vary somewhat with source.

Waypoint	Miles from Mattole	Water Source	Notes
Mattole Trailhead	0	Mattole River	Northern terminus; trailhead parking on Lighthouse Rd
Punta Gorda Lighthouse	3.2	Fourmile Creek	1912 lighthouse, decommissioned 1951; day-use area
Sea Lion Gulch	7.5	Sea Lion Gulch Creek	Wide beach flat; headland passage to time with tide
Cooskie Creek	10.4	Cooskie Creek	Popular camp; nearby headland requires tide below 4 ft
Big Flat	13.6	Big Flat Creek	Widest beach section; bear activity common; exposed camp
Miller Creek	17.1	Miller Creek	Significant creek crossing; high water in spring
Gitchell Creek	21.3	Gitchell Creek	Final crossing of consequence; agate beach section nearby
Black Sands Beach	25.0	Shelter Cove (town)	Southern terminus; limited services in Shelter Cove

The table above is an orientation tool, not a navigation document. BLM's King Range office produces an updated trail guide annually; the hike directory notes current conditions as Lady Humboldt receives them.

Beginning in 2020, BLM implemented an overnight permit system for the Lost Coast Trail during peak season. Permits are required for all overnight stays within the King Range National Conservation Area between May 15 and September 15. Day hikers do not require a permit for this portion; the overnight requirement reflects camping density in a roadless area with limited capacity for managing impacts.

Permits are issued through Recreation.gov. Two entry-point quotas apply: approximately 60 overnight-start permits per night for parties entering from the Mattole Trailhead, and a separate quota for parties entering from the Black Sands Beach end. Shoulder-season travel — before May 15 or after September 15 — does not require a permit, though conditions change accordingly. Creek crossings in early spring carry higher risk from snowmelt and sustained winter rain, and this tradeoff is left to the individual to evaluate. Lady Humboldt notes it without expressing a preference.

A bear canister is required for all overnight parties in the King Range year-round, independent of the permit season. Black bears are resident in the King Range; documented encounters increase as visitation has grown, and the requirement reflects current bear management priorities (BLM King Range, 2025). No food, scented items, or garbage may be stored in a tent or suspended from camp trees within the conservation area. The requirement is enforced.

Campfires are prohibited on the Lost Coast Trail beaches. The combination of persistent wind, dry coastal scrub at the beach margin, and proximity to King Range wilderness makes wildfire risk significant, and the restriction has been in place for several seasons. A camp stove serves all functions a campfire would serve, with the exception of the atmospheric effect — which the Lost Coast's skies supply independently on clear nights, as is their custom.

Several headlands on the Lost Coast Trail are impassable at high tide. These are not situations where one might get slightly wet; they are sections of cliff face that require the ocean's full cooperation for safe passage. Parties that arrive at an impassable headland at the wrong tidal state wait for the next window. This is not a metaphor — it is simply how the route is organized.

The primary headlands requiring timed passage include sections near Punta Gorda (approximately 3 miles south of Mattole), the stretch between Sea Lion Gulch and Cooskie Creek, and two passages south of Big Flat near Randall Creek. BLM King Range guidance recommends passing these headlands when the tide stands below approximately 3.0 to 4.0 feet MLLW, with the precise threshold varying by swell size and direction. The NOAA tidal prediction station at Shelter Cove (Station 9418865) serves as the standard reference for the southern half of the route; parties starting from Mattole should note that tides at the Mattole River mouth run approximately 10 to 15 minutes behind the Shelter Cove station.

The tide pool guide covers NOAA station references for the Humboldt coast in full detail. The headland timing requirement adds a scheduling dimension to trail planning: daily mileage must account not only for distance and terrain but for when the low-tide windows arrive. The events calendar lists any ranger-led trips timed to coastal conditions.

Creek crossings present a separate seasonal consideration. Miller Creek, Big Flat Creek, and several smaller drainages that meet the beach can reach thigh-to-waist depth in May following a wet winter. Historically straightforward crossings become meaningful obstacles for parties carrying full backpacking loads. Trekking poles are advisable for any spring visit; some parties carry lightweight packrafts for the largest crossings in shoulder season, which Lady Humboldt acknowledges is one end of a spectrum rather than a central recommendation. Most May crossings are manageable for experienced hikers with poles and a willingness to remove footwear.

The beach's characteristic dark sand derives from the erosion of the King Range's constituent rocks — primarily graywacke sandstone, argillite, and Franciscan mélange, the geologically complex assemblage of oceanic basalt, chert, and seafloor sediment that forms much of the California Coast Ranges. The darker minerals in these formations — magnetite, hornblende, pyroxene — concentrate on the beach face as lighter quartz and feldspar grains are carried offshore by wave action. The result is a beach that does not photograph the way most California beaches photograph, and that radiates accumulated heat on warm afternoons in ways that gray sand does not.

The Punta Gorda Lighthouse, located at the 3.2-mile mark from Mattole, was constructed in 1912 and decommissioned in 1951, when the installation of a fog signal at Cape Mendocino rendered it redundant at lower operational cost. The lighthouse structure remains, maintained by BLM in coordination with the U.S. Lighthouse Society. Its concrete walls, which survived the 1992 Cape Mendocino earthquake (magnitude 7.2) without structural failure, constitute the most prominent non-natural feature on the trail. Lady Humboldt recommends a brief stop — which is also, given the mileage and the soft sand involved, a reasonable occasion for second breakfast.

Wildlife along the route includes black bears (King Range resident population, active particularly near creek drainages), Steller and California sea lions on offshore rocks throughout the year, black oystercatchers (Haematopus bachmani) at exposed rocky headlands, and, offshore from approximately January through May, gray whales on the northbound migration. The northbound peak runs from March through April. The seasonal wildlife guide covers the whale and sea lion windows in full detail.

The Lost Coast Trail's coastal environment creates gear requirements that differ from standard California backpacking. Wind, salt, and sand infiltrate equipment with more ambition than forest conditions, and fog can persist at beach level through most of a summer day. The following items address conditions specific to this route.

• Bear canister — Required by BLM year-round. Standard canisters (BearVault, Counter Assault, Garcia) are accepted; no single model is specified. One canister per person for parties of standard size.
• Water filter or chemical treatment — Multiple creek sources exist along the route, but giardia risk is present. A gravity or pump filter; iodine tablets as backup.
• NOAA tide tables, downloaded or printed — Cell service is absent for most of the route. A tidal app requires confirmed offline access before departure. A paper printout requires no battery and cannot forget to cache its data. These facts may be related.
• Wind layer, summer-weight — Northwest wind is persistent along this coast. Even in July, afternoon beach travel without a wind shell is uncomfortable in ways that are difficult to explain to people who have visited Humboldt County beaches only in theory.
• Trekking poles — Useful for sand-walking efficiency and essential for creek crossings in spring. Two poles are preferable to one for crossing stability.
• Dry bags or pack liner — The route's proximity to the surf zone, combined with creek crossing submersions, makes moisture management a planning consideration rather than a precaution.
• Low gaiters — Fine black sand enters footwear with considerable ambition. Low gaiters address this adequately; high gaiters are unnecessary for the terrain.
• Sun protection — The Lost Coast receives substantial summer sun on beach sections, particularly in the afternoon after the marine layer lifts. The dark sand surface absorbs rather than reflects UV; the burn rate does not adjust to the aesthetic.

Standard backpacking kit otherwise applies: ten essentials, emergency contact left with a responsible party, and sufficient food for planned days plus one. Resupply is not available between the two trailheads. A satellite communicator (InReach, SPOT) is advisable given the absence of cell service; the nearest emergency access points are the trailheads themselves.

South of Black Sands Beach, the Lost Coast continues through the Sinkyone Wilderness State Park, extending the coastal route by approximately 24 additional miles to Usal Beach Campground near Rockport. The Sinkyone section follows a mix of coastal bluff trail, redwood forest, and short beach stretches — it shares the Lost Coast name and general character but is administered by California State Parks rather than BLM, carries separate permit requirements, and does not follow continuous beach for its length.

Through-hikers who complete both sections cover approximately 49 miles of coastal terrain. This itinerary requires additional planning for permits, water sources, and the different terrain character of the Sinkyone. California State Parks Sinkyone maintains current permit and condition information; the BLM King Range office can advise on the transition logistics.

When are permits required for the Lost Coast Trail?

Overnight permits are required for all parties camping in the King Range National Conservation Area between May 15 and September 15. Permits are issued through Recreation.gov with separate entry-point quotas for the Mattole and Black Sands Beach trailheads. Shoulder-season travel outside those dates does not require a permit, but encounters different conditions, particularly for creek crossings in spring.

Are the creek crossings dangerous in spring?

Miller Creek, Big Flat Creek, and several smaller drainages can reach thigh-to-waist depth in May following above-average winter precipitation. Crossings that are ankle-deep in August may require different judgment in May. Trekking poles and dry bags for electronics address the most common crossing scenarios. BLM's current conditions report, available on the King Range website, provides seasonal creek status updates before departure.

Which direction is more commonly hiked?

The majority of through-hikers travel south from Mattole to Black Sands Beach, placing the prevailing northwest wind at their back. Some parties prefer the reverse direction for logistics — parking at Shelter Cove is limited — or to end the trip closer to Highway 101 for the return drive. Both directions are viable; the headland timing logic and water sources are symmetric.

What wildlife is typically seen along the route?

Black bears are present throughout the King Range and are seen regularly on beach sections, particularly near creek drainages at dawn and dusk. Steller and California sea lions haul out on offshore rocks along the full route. Black oystercatchers patrol exposed headlands. Gray whales pass offshore from January through May; the northbound peak runs from March through April. The seasonal wildlife guide covers Humboldt County's full wildlife calendar in detail.

Lady Humboldt's weekly field guide arrives Tuesday mornings with trail conditions, tidal windows, and seasonal wildlife notes for the north coast. A subscription is here — it costs nothing and arrives without ceremony.