NPS/Scott Hansen
You may hike on the dunes 24 hours a day. A free permit from the Visitor Center is needed if you plan to camp on the dunes at night.
Great Sand Dunes National Park and Preserve is open 24 hours a day, every day of the year. In winter, the Visitor Center hours are 9:00 a.m. to 4:30 p.m. daily, except for federal holidays, when the building is closed. In spring and fall, the Visitor Center is generally open 9-5. Summer Visitor Center hours, from Memorial Day weekend to Labor Day weekend, are 8:30-6:30. Call ahead at (719)378-6399 for specific Visitor Center information.
