Colorado Springs Cycling Club - For all ages and abilities; bikesprings.org.
Pedaling for St. Pat's - Downtown. Go online for cost and registration: csstpats.com.
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.
Hikes at Florissant Fossil Beds National Monument - Florissant, entrance fee, $7 for 16 or older; 748-3253. - Winter Track Detectives, 11 a.m.-12:30 p.m. Saturday.
Rocky Mountain Hiking Trails - With information on more than 70 hikes; rockymountainhikingtrails.com.
5K on St. Pat's Day - Downtown. Go online for cost and registration: csstpats.com.
Nature programs at Bear Creek Nature Center - 245 Bear Creek Road. Registration: 520-6387. - Nature Explorers: Wake Up Tree, for ages 4-5 with an adult, 9-10:30 a.m. March 21, $3. - Aiken Audubon Monthly Program, 6:30 p.m. March 21, free. - Little Wonders: Bird Looses Feathers, for ages 2 and 3, 9-10:15 a.m. March 22, $3.
Nature programs at Florissant Fossil Beds National Monument - Florissant, entrance fee, $7 for 16 or older; 748-3253. - Night Sky Program, 7:30-10 p.m. Friday.
Sunrise nature/wildlife photo shoot - Saturday mornings, Westcliffe, $55. Reservations: 1-303-823-6399, kennethwajda.com/naturewildlife/.
Colorado Birding Trail website - Coloradobirdingtrail.com, information about places to observe birds and other wildlife.
Colorado Wolf and Wildlife Center - 4729 Twin Rocks Road, Divide; Reservations: 687-9742, wolfeducation.org. - Winter Wolf Meet & Greet, 9-11 a.m. Sunday, $15-$35.
Hutchinson Homestead Ranch and Learning Center Tours - Salida, $5, $3 for ages 8-16; 239-0955, hutchinsonhomestead.org.
Better Bird Watching - Presented by biologist Joe La Fleur, 2:30 p.m., Woodland Park Public Library, 218 E. Midland Ave., Woodland Park, free; Jennie Darrah, 687-9281, ext. 103, rampartlibrarydistrict.org.
Fly Fishing Film Tour - 4 p.m. and 8 p.m., Mile High Station, Denver, $15 in advance, $18 at door; trouts.com.
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, email@example.com.
Colorado Springs Running Club - 7:30 a.m. Fridays and Saturdays, 6 p.m. Wednesdays. 45- to 60-minute runs, free; 635-3833.
North Cheyenne Cañon Park - Volunteers are needed for outdoor education at Starsmore Visitor and Nature Center; Aaron Rogers, 385-6089, firstname.lastname@example.org.
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.
Colorado Wolf and Wildlife Center - Volunteers needed to work in the visitor center, grounds keeping, leading tours and more, 4729 Twin Rocks Road, Divide; 687-9742.
Fountain Creek Nature Center - 320 Peppergrass Lane, Fountain. Registration: Paula, 520-6745 , email@example.com. - Volunteer Field Trip Leader Training, 12:30-5 p.m. Tuesday and Wednesday.
Bear Creek Nature Center - 245 Bear Creek Road. Reservations: Paula, 520-6387, firstname.lastname@example.org. - Environmental Education Leader Training, 12:30-5 p.m. March 20 and 21.
Listings are published on a space-available basis. Send information at least two weeks in advance: Email email@example.com.