Explore and learn about the Aspen area with ACES! Hire an ACES Naturalist guide, available by the hour, to lead you on private adventures that may be customized to your interests such as birding, wildflower hikes, and more. Trip options are below and in the menu on the left. Basic fees for private, guided hikes are $50 per hour per guide, with a two hour minimum. A snack or lunch can be provided for an additional cost. Please call Lauren Deriaz at 970-925-5756 for more information and to reserve your guide or click here. 48-hours notice recommended for tour reservations. If you call after 5pm your call will be returned by 9am the next business day. All tours led by a certified interpretive Naturalist.