Whether you're looking for a short stroll or a longer hike, you’re likely to find what you want. Over ten miles of easy walking is available on the Blue Hill, Mahnomen and Oak Savanna Learning Center Trails year-round. Each trail is designed with loops that pass through oak woodlands and prairie openings, skirting nearby wetlands. From September 1 through February 28, hiking is available on refuge service roads and off-trail hiking is allowed.