Hiking
• Water Detectives, for ages 6-12, 10 a.m.-noon Thursday. Registration required.
Mueller State Park — 21045 Colorado 67, Divide. Day pass $9 per vehicle. Registration required: 687-2366.
• Cahill Cabin and Pond, 8:30 a.m. Friday, Camper Services parking area.
• Bird Walk, 8:30 a.m. Saturday, Elk Meadow Trailhead.
• School Pond and Stoner Mill, 9:15 a.m. Saturday, Visitor Center parking area.
• Full Moon Hike, 7:30 p.m. April 26, Outlook Ridge Trailhead.
COTREX — Colorado’s official trails app; trails.colorado.gov.
Rocky Mountain Trails — Information on more than 70 hikes; rockymountainhikingtrails.com.
MAY 22
Nature
Cheyenne Mountain State Park — 410 JL Ranch Heights Road. Offering online activities for children; cpw.state.co.us/placestogo/parks/cheyennemountain.