Folsom Lake State Recreation Area wraps around the reservoir north of the city and is the main outdoor draw for the region. The lake has 18,000 acres of water surface when full and more than 150 kilometres of shoreline, with multiple swimming beaches, boat launches, equestrian trails, and campgrounds spread around its arms.
The American River Bike Trail connects the city directly to the recreation area, making it easy to reach by bicycle. The best swimming beaches are at Beals Point and Granite Bay. Kayaks, paddleboards, and motorboats can all be launched from ramps throughout the park; boat rentals are available near the Brown's Ravine marina. The trails around the lake are open to hikers, mountain bikers, and horses. The park day-use fee applies. In summer the lake gets busy at weekends — arrive early or visit mid-week.