National Park Service.
Follow in the footsteps of over 250,000 emigrants who traveled to the gold fields and rich farmlands of California during the 1840s and 1850s: the greatest mass migration in American history. The California National Historic Trail is over 5,000 miles long and covers portions of 10 states. Step into history along more than 1,000 miles of ruts and traces from travelers and their overland wagons.
Those portions of the California National Historic Trail authorized by Congress include nearly 2,000 miles of historic trail that was once the primary "road" taken by farmers, enterprising business managers, gold-seekers and fortune hunters who chose to make a new life on the California frontier. The route passes through ten states from Missouri to California.