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Routes
Hikes
United States
California
Humboldt County

Harry A. Merlo State Recreation Area

Routes
Hikes
United States
California
Humboldt County

Harry A. Merlo State Recreation Area

The best walks and hikes in Harry A. Merlo State Recreation Area

5.0

(25)

240

hikers

3

hikes

Hikes in Harry A. Merlo State Recreation Area are characterized by coastal landscapes along the shores of Big Lagoon in Humboldt County. The terrain primarily consists of flat, sandy spit trails separating the lagoon from the Pacific Ocean, with some routes extending into nearby Sitka spruce forests. The area is part of the larger Humboldt Lagoons State Park system and offers a mix of beach and woodland hiking experiences.

Best hiking trails in Harry A. Merlo State Recreation Area

  • The…

Last updated: July 7, 2026

#1.

California Coastal Trail: Stone Lagoon

4.93km

01:23

100m

100m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

5.0

(1)

22

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

9.79km

02:56

450m

100m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

5.0

(24)

212

hikers

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

Moderate

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Tips from the Community

Andrus
July 15, 2025, Sue-meg State Park

Just 30 miles north of Eureka, Sue-meg State Park stretches across a forested headland overlooking the Pacific Ocean. Though only one square mile in size, the park is packed with natural beauty and cultural discovery. A stroll around its perimeter reveals agate-strewn beaches, vibrant tidepools, and lush coastal forest, with chances to spot seals, sea lions, and even migrating whales. Deeper within, visitors can explore a native plant garden, stop by the visitor center, or walk through a reconstructed Yurok plank-house village. Three scenic campgrounds offer peaceful spots to picnic or spend the night beneath the stars. In summer, guests can attend traditional ceremonies at Sumêg Village or join guided hikes led by docents and naturalists. Whether you're here for wildlife, history, or solitude, Sue-meg offers something remarkable around every corner.

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There are several tree tunnels cut out of fallen redwoods throughout the national park, they are quite large for any body to fit through! this one is probably 7ft tall by 5 ft wide

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Kodo
September 24, 2022, Redwood Creek

wonderful refreshment when hiking, also here are the largest measured trees on earth

Translated by Google

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Frequently Asked Questions

Are dogs allowed on the trails in Harry A. Merlo State Recreation Area?

No, with the exception of service animals, dogs are not permitted on the trails within Harry A. Merlo State Recreation Area. This is a common regulation in many state and national parks in the region to protect wildlife and natural habitats. For the most current rules, it's always a good idea to check the official park website.

What is the best time of year to hike here?

Spring and summer are fantastic times to visit. In May and June, the nearby Stagecoach Hill/Azalea Nature Trail is famous for its vibrant display of pink and white azalea blossoms. Summer offers milder coastal weather, perfect for beach hiking. However, the weather can be unpredictable year-round, so dressing in layers is always recommended.

Are there any good circular hikes or loops?

Yes, the area offers some excellent loop trails. For a shorter walk with great coastal scenery, the Rim Trail Overlook – Sue-meg State Park loop from Mussel Rocks is a popular choice. It's about 2.5 miles (4 km) and provides beautiful views without a major time commitment.

Can I see redwood trees in Harry A. Merlo State Recreation Area?

The immediate recreation area is characterized by Sitka spruce forests and coastal dunes, not old-growth redwoods. However, it serves as a gateway to Redwood National and State Parks, which are just a short drive away. For a true redwood experience, you can explore trails like the Redwood Creek on Tall Tree Trail – Redwood National Park.

What kind of wildlife can I expect to see?

The area is a haven for birdwatchers, as it's part of the Pacific Flyway, a major migratory route. Keep an eye out for various shorebirds and waterfowl. It's also not uncommon to spot a herd of Roosevelt Elk in the vicinity of the lagoons and meadows. Remember to always observe wildlife from a safe and respectful distance.

How do I get to the park and where can I park?

The recreation area is located about 32 miles north of Eureka, accessible directly from Highway 101. Convenient parking and beach access are available at the adjacent Big Lagoon County Park, which serves as the main entry point for exploring the trails along the lagoon and ocean spit.

Are there any wheelchair-accessible trails?

The primary trails in the recreation area, like the Big Lagoon Beach Trail, are on a sandy spit, which is generally not suitable for wheelchairs. For accessible options in the broader region, it is best to consult the resources provided by Redwood National and State Parks, as they often have designated accessible trails and facilities.

What makes hiking in this area unique?

The main appeal is the ability to hike on the sandy spit that separates the calm Big Lagoon from the Pacific Ocean. This offers a unique dual-water experience with serene lagoon views on one side and crashing ocean waves on the other. The landscape is a mix of coastal dunes, Sitka spruce forest, and expansive wetlands.

What do other hikers say about the trails?

The routes in and around Harry A. Merlo State Recreation Area are highly rated by the komoot community. Hikers often praise the stunning coastal views, the sense of solitude on the beach, and the unique experience of walking between the lagoon and the ocean.

Are there other activities besides hiking?

Yes, the area is popular for a variety of outdoor pursuits. The calm waters of Big Lagoon are ideal for kayaking, paddleboarding, and fishing. The ocean side attracts windsurfers and surfers, while the diverse habitats make it a prime spot for birdwatching and photography.

How does this area compare to Sue-meg State Park (formerly Patrick's Point)?

Harry A. Merlo SRA is focused on the lagoon and beach spit, offering flat, sandy coastal hikes. Sue-meg State Park, its neighbor to the south, features more dramatic, rocky headlands with trails that climb through forests to stunning ocean overlooks. For a hike that combines these landscapes, consider the Palmers Point loop from Sue-meg State Park.

Most popular routes in Harry A. Merlo State Recreation Area

Family-friendly hikes in Harry A. Merlo State Recreation Area

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