Car

U.S. 101 runs north–south nearly the entire length of the park. You can access all the main park roads via U.S. 101 and U.S. 199, which runs east–west through the park's northern portion. Many roads within the park aren't paved, and winter rains can turn them into obstacle courses; sometimes they're closed completely. Motor homes/RVs and trailers aren't permitted on some routes. The drive from San Francisco to the park's southern end takes about six hours via U.S. 101. From Portland it takes roughly the same amount of time to reach the park's northern section via Interstate 5 to U.S. 199. Don’t rely solely on GPS, which is inaccurate in parts of the park; closely consult official park maps.