Redwood National Park
Collaborative group of parks in California.
Each edition grades its towns against each other only.

With nothing inside Mad River, the list has 4 places within 40 miles. Look for a theme park, a state park and a national forest. At 51 mi, Redwood National Park is worth the journey.

Collaborative group of parks in California.
The towns around it, and where to stay →
Out of town, most of the 4 are to the northeast.
Orange: Mad River. Numbers: the best-known places, matching the list below. © OpenStreetMap contributors
All 15 on the list lie within 60 miles.
Collaborative group of parks in California.
State park in Humboldt County, California, United States.
State park in Weaverville, California.
National Recreation Area located in northern California.
Facility in Arcsta, California.
Gardens near Eureka, California, United States.
Ranked by how many people look them up, so the famous places lead and the local favorites follow.
Parks and trails in Mad River →
Redwood National Park: Michael Schweppe, CC BY-SA 2.0 · Confusion Hill: Tomas Sennett, Public domain · Humboldt Redwoods State Park: Jason Sturner, CC BY 2.0 · Shasta–Trinity National Forest: Unknown, CC BY-SA 3.0 · Weaverville Joss House State Historic Park: Frank Schulenburg, CC BY-SA 4.0 · Turtle Bay Exploration Park: DimiTalen, CC BY-SA 3.0 · Cascade Theatre: Publichall, CC BY-SA 3.0 · Whiskeytown-Shasta-Trinity National Recreation Area: RoyalMayfair, CC BY-SA 4.0 · Arcata Wastewater Treatment Plant and Wildlife Sanctuary: Monotropa_uniflora (talk) (Uploads), Public domain · Clarke Historical Museum: NoeHill, CC BY-SA 3.0 · Ferndale Museum: Ellin Beltz, Public domain · Humboldt Bay Maritime Museum: Frank Schulenburg, CC BY-SA 4.0 · Humboldt Botanical Gardens: Jennie Sperling, Public domain · McConnell Arboretum & Botanical Gardens: Daderot, CC0