The Stillwater River, a significant waterway in western Ohio, originates in Darke County and flows southward, eventually joining the Great Miami River in Dayton. This 58-mile long river is a key part of the Great Miami River watershed, draining portions of Darke, Miami, and Montgomery counties. Paddlers can experience a range of conditions along the Stillwater, from placid flatwater to challenging Class II-III rapids.

The river offers several notable sections for kayaking and canoeing, including the popular 7-Mile Drop from Goode Reserve to Maple Ridge, featuring approximately 20 rapids and scenic views of four major parks and unique bridges. For a more leisurely experience, the Barefoot Canoe Trip section near West Milton provides an easy, family-friendly float. The river's difficulty ranges from Class I to III, with some sections suitable for beginners and others demanding more experienced paddlers.

The full 58-mile Stillwater River Trail encompasses this variety, passing through diverse landscapes including glacial canyons, forests, and rural areas. Spring and early summer typically offer the best water levels for paddling, though sections like the Stillwater River Road area may require navigating around rocks or portaging during low water conditions. The river supports a rich ecosystem, with opportunities for wildlife watching throughout its course.

Key access points include the Riffle Road bridge in Darke County, West Milton, and various locations along Stillwater River Road. The river passes through or near several towns, including Versailles, Bradford, and Covington, before reaching Dayton. Designated as Ohio's 8th scenic river in 1975, the Stillwater holds significant ecological and recreational value. It forms part of a larger water trail system that collectively offers 265 miles of waterway for boating, fishing, and nature observation.

Safety considerations include checking water levels, being prepared for potential portages, and obtaining necessary permissions for put-ins and take-outs. Some access points, like Stillwater Beach Campground, may require fees. For those seeking a multi-day adventure, the full 58-mile trail can be divided into shorter segments, allowing paddlers to explore the river's changing character from its upper reaches to its confluence with the Great Miami River. This extended journey showcases the Stillwater's role as a vital artery in western Ohio's natural and cultural landscape.