South of Eureka near Weott, the Humboldt Redwoods State Park has over 100 miles of hiking trails over 52,000 acres, including over 17,000 acres of ancient old-growth coast redwood forest. It has the largest remaining contiguous old-growth coast redwood forest in the world. The trees here are thousands of years old and have never been logged. This forest is as pristine now as it was 100 years ago.
The park is located 45 miles south of Eureka along the Avenue of the Giants and 20 miles north of Garberville.
Here are the trails in the area:
Baxter Trail (from Mattole Road) 2.4 miles
Bull Creek Trail Camp to Perimeter Multi-Use Trail 2.3 miles
Fox Camp Multi-Use Trail (top of Pole Line to Mattole Road) 6.7 miles
Grasshopper Multi-Use Trail to Grasshopper Trail Camp 6.6 miles
Grasshopper Multi-Use Trail to Fire Lookout 6.7 miles
Grasshopper Peak to Mattole Road 11.9 miles
Homestead Trail 3.5 miles
Indian Orchard Trail 3.1 miles
Kemp Multi-Use Trail to Bull Creek Trail Camp 3.8 miles
Look Prairie Multi-Use Trail 3.5 miles
On Peavine Ridge Multi-Use Trail: Pole Line to Thornton 4.3 miles
On Peavine Ridge Multi-Use Trail: Thornton to Look Prairie 3.7 miles
Pole Line Road 2.3 miles
South Prairie Trail 3.2 miles
Squaw Creek Ridge Multi-Use Trail 7.6 miles
Tan Bark Multi-Use Trail 3.04 miles
Thornton Trail 5.2 miles
Overall, Humboldt Redwoods State Park is the 49th most popular hiking trail of all 88 hikes in California.