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.
Last updated: July 7, 2026
4.93km
01:23
100m
100m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
22
hikers
6.42km
01:45
90m
90m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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3
hikers
3.94km
01:03
40m
50m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
9.79km
02:56
450m
100m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(24)
212
hikers
5.94km
02:15
190m
190m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
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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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wonderful refreshment when hiking, also here are the largest measured trees on earth
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.


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