Thursday

Boulder Tuesday Thursday Hikers: Join outdoor enthusiasts for a day hike with this leaderless, rule-following drop-in group that breaks into smaller groups and carpools to various trailheads. Drivers are reimbursed for expenses. Bring a lunch, water and snacks, and be prepared for all weather conditions; 9 a.m. Thursday, North Boulder Park, Seventh and Dellwood, Boulder; free; 303-494-8822.

Saturday

Nature journaling adventure: Enjoy a brief nature walk guided by Coy Ink at Roosevelt Park followed by coffee and a cozy fireplace at MECO Coffee shop where the group will draw what they saw in the park; 1 p.m. Saturday, City of Longmont St. Vrain Memorial Building, 700 Longs Peak Ave., Longmont; $45-$56.25; 720-340-2016.