California State Highway 254 is the 32-mile Avenue of the Giants parelleling U.S. Highway 101 through Humboldt Redwoods State Park in California. This highway is notable for the Coast Redwoods that overshadow the road.

The two-lane road has a number of parking areas and picnic sites for visitors.

The Avenue of the Giants was once part of U.S. Highway 101 until a freeway bypass was built.