The Aspen Center for Environmental Studies (ACES) will again be leading regular nature programs at North Star during the 2019 summer. ACES naturalists will be stationed on-site to engage with visitors and provide interpretive education. Additionally, in partnership with Pitkin County Open Space and Trails, ACES will offer the following, free guided hikes and programs which will provide access to areas of North Star otherwise closed to the public. Programs have limited space and require advance registration with ACES. Offerings include:

• Take a Walk on the Other Side with ACES Director of Naturalist Programs Jim Kravitz, from 9 a.m. to 1 p.m. on July 15, Aug. 23 and Sept. 11.
• North Star Birding with ACES Bird Guide Rebecca Weiss - Songs of Breeding Birds, 6:30-8:30 a.m. on June 20; Breeding Birds, 6:30-8:30 a.m. on June 27; South Side of the River, 7:30-10:30 a.m., Aug. 8; Early Migration, 7:30-9:30 a.m. on Aug. 22.
  
• Evening of the Elk with local expert Will Cardamone, from 6 to 8 p.m., (tentative dates are Oct. 2, Oct. 4 and Oct. 9).

The Roaring Fork Conservancy will offer guided floats through the Preserve. These floats, using inflatable kayaks, have limited space and require advance registration with RFC. The fee is $10 per person. Dates include: June 4, June 12, June 13 and June 19.