The Yellow, Red and Green trails are open to mountain biking, hiking, running, hunting, bird watching and, weather permitting, cross-country skiing and snowshoeing. There is no horseback riding permitted on these trails.

• The 5-mile Yellow Trail is for beginner mountain bikers and families. Trail access is located in the campground.
• The 8.6-mile Red Trail includes more difficult sections, but also encompasses easier bypasses for less experienced bicyclists. The trail features a collection of winding hills accompanied by wooded sections that pass ponds and trenches. The trail can be accessed via the mountain bike trailhead.
• The 7-mile Green Trail includes some technical sections and travels past Eagle Lake and several other streams. The trail can be accessed via the mountain bike trailhead.

The Fort Custer trail map and guide outlines trailhead locations and routes.