NOTE: Yew Haw and Acer Spades Trails are closed for the rainy season and will reopen in late Spring. Just east of Springfield, the Thurston Hills Natural Area offers five trails, which can be combined for more than 6.5 miles (14.5 km) of riding. The main trailhead entrance is located off Main Street and 75th Street in Springfield. The 660-acre (267 ha) natural area is a gem of green space near the urban center. The trailhead provides restrooms, picnic tables, an information kiosk and a bicycle cleaning and repair station.
These predominately green-rated routes are perfect for new mountain bikers and kids. Two of the trails offer a separate downhill trail dedicated to mountain bikers. In addition to mountain biking trails, the Upper and Lower Mossy Maple Trails offer 6 miles (9.7km) of round trip of hiking.
Acer Spades Trail is recommended for beginners, where Yew Haw Trail is intermediate, with a few more natural obstacles, jumps and small water crossings. Camas Crest Trail utilizes a gravel access road through oak savanna and upland prairie if you are looking for a viewpoint across the valley.