Boulder Forks is a popular fishing access site on the upper Boulder River located 16 miles southeast of Big Timber, Montana, offering 6-8 primitive camping spots suitable for RVs and trailers up to 20 feet in length.

The site features a hand launch for water access, vault toilet, and free camping with a maximum 7-day stay limit, though the dirt track to riverside camping areas requires careful navigation.

Access is via a quarter-mile gravel road from Highway 298, with the site open year-round at 4,787 feet elevation.