The Colorado Springs Cycling Club - For all ages and abilities; bikesprings.org.
Garden of the Gods Visitor and Nature Center sponsored hikes - 1805 N. 30th St., free; 219-0104. - Daily Guided Nature Walks, 10 a.m. and 2 p.m., meet north main parking lot.
Bear Creek Nature Center hikes - 245 Bear Creek Road. Reservations: 520-6387. - Warm Hearts Hike, 6-7:30 p.m. Wednesday, $4.
Hikes at Florissant Fossil Beds National Monument - Florissant, entrance fee, $7 for 16 or older; 748-3253. - Great Backyard Bird County, 9 a.m.-3 p.m. Saturday. - Winter Poetry Hike, 1-3 p.m. Feb. 24. - Hike for Your Health, noon-2 p.m. Feb. 25.
Rocky Mountain Hiking Trails - With information on more than 70 hikes; rockymountainhikingtrails.com.
Nature programs at Fountain Creek Nature Center - 320 Peppergrass Lane, Fountain. Reservations: 520-6745. - Family Nature Camp Day, 10 a.m.-2 p.m. Saturday, $30-$90. - Kritter Karavan, 10 a.m.-noon Feb. 24, $5.
Nature programs at Bear Creek Nature Center - 245 Bear Creek Road. Registration: 520-6387. - Nature Explorers: Over & Under the Snow, for ages 4-5 with an adult, 10-11:30 a.m. Wednesday and Thursday, $3. - Little Wonders: Living Through Winter, for ages 2 and 3, 10-11:15 a.m. Feb. 21 and 22, $3. - Aiken Audubon Monthly Program: Insects, 7-8 p.m. Feb. 21, free.
Nature programs at Florissant Fossil Beds National Monument - Florissant, entrance fee, $7 for 16 or older; 748-3253. - Night Sky Program, 7-9:30 p.m. Friday.
Sunrise nature/wildlife photo shoot - Saturday mornings, Westcliffe, $55. Reservations: 1-303-823-6399, kennethwajda.com/naturewildlife/.
The Colorado Birding Trail website - Coloradobirdingtrail.com, information about places to observe birds and other wildlife.
Hutchinson Homestead Ranch and Learning Center Tours - Salida, $5, $3 for ages 8-16; 239-0955, hutchinsonhomestead.org.
Umpqua Signature Tying Class - With Landon Mayer, 5:30-7:30 p.m., Trouts Denver, 1303 E. 6th Ave., Denver, $75; tinyurl.com/yanuwp4r.
Achilles International Pikes Peak Running Club - A nonprofit organization that uses the power of running as a tool to bring hope, inspiration and the joys of achievement to people with disabilities, 6:15 p.m. meet up and sign in; 6:30-7:30 p.m. run, walk or wheel, Mondays, Colorado Running Co., University Village Center, 5262 N. Nevada Ave., Suite 140; Laura, 331-1011.
Mountain Post Running Club - 5K or 10K, 4-6 p.m. Wednesdays, Main PX, 6220 Martinez St., Fort Carson, free. Children, strollers and pets welcome; Kris Spiller, firstname.lastname@example.org.
The Colorado Springs Running Club - 7:30 a.m. Fridays and Saturdays, 6 p.m. Wednesdays. 45- to 60-minute runs, free; 635-3833.
Pikes Peak Road Runners - Go online for information, cost and registration: pprrun.org. - Ralston Creek Half Marathon & 5K, 9 a.m. Sunday, Arvada.
Bear Creek Nature Center - 245 Bear Creek Road. Registration: 520-6387. - Outdoor Adventure Gear: Snowboard Maintenance, 10 a.m.-12:30 p.m. Feb. 24, $15.
North Cheyenne Cañon Park - Volunteers are needed for the outdoor education programs at the Starsmore Visitor and Nature Center; Aaron Rogers, 385-6089, email@example.com.
Mueller State Park - 21045 Colorado 67, Divide, needs volunteers for naturalist programs, backcountry-trail maintenance, newsletter editing or work in the visitor center. Training is provided; 687-2366.
Colorado Springs Therapeutic Riding Center at The Mark Reyner Stables - Volunteers needed to help special needs children and adults during their equine-assisted therapy; 634-4173, cstrc.org.
Listings are published on a space-available basis. Send information at least two weeks in advance: Email firstname.lastname@example.org.