THURSDAY, JULY 23
Colorado Corporate Challenge 4K. 6:30 a.m. 10th Street and Pearl Street, Boulder, 303-931-5306.
#NEPALiLOVEYOU. 6 p.m. Boulder Theater, 2032 14th St., Boulder, 702-293-1161.
Dancing on the Edge of an Endangered Planet — with John Mattson. 8 p.m. Neptune Mountaineering, 633 S. Broadway St., Suite A, Boulder, 303-499-8866.
FRIDAY, JULY 24
Multi-Pitch Climbing — Level 3. 8 a.m. First Flatiron, Boulder. Meet in Chautauqua parking lot. Email Denver-OS@rei.com.
SATURDAY, JULY 25
Strong Kids Triathlon — For children 2 to 15 years of age. 9 a.m. YMCA of Boulder Valley Arapahoe Center, 2800 Dagny Way, Lafayette, 303-664-5455.
Colorado 14er Training Hike. 8 a.m. Bear Peak. Meet at South Mesa Trailhead, Eldorado Springs Drive, Boulder. Email Denver-OS@rei.com.
Cobbles of Time — The Geology of Caribou Ranch. 9.a.m. Caribou Ranch Open Space, Caribou Road, Nederland, 303-678-6214.
SUNDAY, JULY 26
Tri Boulder. 6 a.m. Boulder Reservoir, 5565 N. 51st St., Boulder, www.bbsctri.com.
Getting Back to Your Senses: Nature Journaling. 9 a.m. Bobolink Trailhead, Gapter Road, Boulder, www.naturehikes.org.
Butterflies and Other Flying Creatures. 9:30 a.m. Meyers Homestead Trail at Walker Ranch, 8999 Flagstaff Road, Boulder. Meet at trailhead picnic table. 303-678-6214.
TUESDAY, JULY 28
International & Adventure Travel Basics. 6:30 p.m. REI Store, 1789 28th St., Boulder, 303-583-9970.
To list your event, send information to: firstname.lastname@example.org. attn: “Adventure.”