To get an event listed in the calendar, send your information 14-21 days in advance to: OEcalendar@denverpost.com or fax 303-866-9004. Be sure to include a contact number. Items will run on a per-space basis.
ADVENTURE RACING
May 27
Crowned Lizard Adventure Challenge; team race; at Vail Mountain in Vail; 3,000 feet of elevation gain $75; 8 a.m. urbanadventures.us
June 4
GNC Adventure Sprint Race; mountain bike, navigate, trek, paddle, ropes and possible snowshoe; in Vail; three- to six-hour race; three-person coed teams, $250 per team; amateurs and pros welcome. tevamountaingames.com
CYCLING
Mountain and road
Wednesday
Highlands Ranch Ride of Silence; short ride to honor cyclists killed or injured in incidents with motor vehicles; at Bike Source, southeast corner of University Boulevard and County Line Road; 6:30 p.m. rideofsilence.org or 303-877-2437
Saturday
Buena Vista Bike Fest; century route to Leadville, along Turquoise Lake Road, around the Mineral Belt Trail and through the Leadville Mining District, then back to Buena Vista; climbing through the first 60 miles, then downhill and flat for the final 40 miles; $40; 7 a.m. bvbf.org
2006 Independence Pass Foundation Ride for the Pass; in Aspen; race and recreational ride, from Aspen to Independence Ghost Town; 20 miles round trip; elevation gain of 2,000 feet; ride the corridor before it opens to automobile traffic; $40; 9 a.m. independencepass.org
Sunday
Mission To Ride; start at Rotary Park, Columbine Middle School, in Montrose; a noncompetitive cycling tour; century ride (100 miles), Black Canyon 40-mile, 60-mile or 30-mile; also a 17-mile mountain bike; climb to the Black Canyon of Gunnison National Park; all ages; $25 to $65. missiontoride.com
Community Classic Bike Tour; 30/37 mile and metric century, $40 to $45; 5-mile, $10; in Loveland; 6:30 a.m. mckeefoundation.com
Aspen Cycling Criterium; in Aspen; a loop route on closed city streets; all levels; $20; 9 a.m. 970-429-2093
May 24
Town Challenge Mountain Bike Race No. 1; at Howelsen Hill Bluffs Circuit, in Steamboat Springs; recreational and competitive; 5:30 p.m. 970-879-4300
May 26
Women’s Mountain Bike workshop with Mia Stockdale, a professional mountain biker, veteran of World Cup and national races; learn new skills; all levels welcome; 5:30-7:30 p.m.; $20. outdoordivas.com
May 27
Pedal the Platte; 10- and 30-mile bike rides; follows the South Platte River Trail; 30-mile starts at 8 a.m.; 10-mile 9:30 a.m.; at REI Flagship store, 1416 Platte St., in Denver; adults and children; $20 to $30. beckwourthmountainclub.org
May 27-28
35th Iron Horse Bicycle Classic; May 27: 47-mile Durango and Silverton Narrow Gauge Railroad road race, course covers two mountain passes, with nearly 5,400 feet in vertical elevation gain, citizens tour races against the train from Durango to Silverton; May 28: criterium races, kids races, fourth-oldest bike race in the U.S.; $40 to $70. ironhorsebicycleclassic.com
June 2-3
Freeride Challenge; in Vail; head-to-head races through 150-yard course with jumps and obstacles; $30. tevamountaingames.com
KAYAKING
May 27-28
Clear Creek Whitewater Festival; freestyle, downriver-cross, boater-cross and slalom events; hosted by Golden River Sports; Clear Creek Whitewater Park, downtown Golden. 303-215-9386
May 31
Raft and Kayak PaddleCross; in Vail; three rafts or four kayaks race on a Class IV section of the Eagle River through Dowd Chute; $100 team, $30 kayaks. tevamountaingames.com
RUNNING
Saturday
Mike the Headless Chicken 5K; part of Fruita’s Mike the Headless Chicken Festival; $20; in downtown Fruita; 9 a.m. 970-858-0360
AirLife Memorial 5K and 10K run/walk; at Hudson Gardens, 6115 South Santa Fe Drive, in Littleton; $13 to $26; 8 a.m. airlifedenver.com
Cottonwood Classic 5K; 5K adults (13-59), $20; 5K kids and seniors, $14; at Thorncreek Crossing, 120th Street and Washington Avenue, in Thornton; 8 a.m. 303-694-2030
Federal Cup 5K; run, walk and race walk; $8; at Denver Federal Center, in Lakewood; 8:15 a.m. fedcup5k.com
Gleneagle Spirit 5K Run/Walk for Fun; in the Gleneagle neighborhood, in Colorado Springs; 9 a.m. 719-492-3974
28th Hayden Cog Run; cog, 10K and 5K runs; a challenging 8.4-mile out and back course; 3 miles of steep climb; $25; at Hayden Town Park, in Hayden; 10 a.m. runningseries.com
Wheels and Heels 5K/1K run/walk; all ages; $15 to $25; at City Park, in Denver; 10 a.m. parkinsonrockies.org
Saturday-Sunday
24 Hours of Boulder … the Run; solo or team; a 7.14-mile course; the person or team that completes the most loops in 24 hours wins; noon to noon; at Boulder Reservoir, in Boulder. geminiadventures.com
Boulder 100; Saturday noon to Sunday 1 p.m.; at Boulder Reservoir, in Boulder; 100 miles; $130. 303-652-9949
Sunday
Post-News Colorado Colfax Marathon; full and half marathons; through Aurora, Denver and Lakewood; solo and team; $60 to $200; 6 a.m. coloradocolfaxmarathon.org
Dolphin Dash 5K/1-mile run/walk and Popsicle Dash; at John Meade Park, in Cherry Hills Village; $10 to $60; 9 a.m. chvedadsclub.org
May 28
Narrow Gauge Runs; 10-miler and 5K; one of the oldest races in Colorado; part of the Iron Horse Bicycle Classic; at Fort Lewis College and First National Bank, in Durango; $25 to $30; 8 a.m. go-dmt.org
May 29
2006 Bolder Boulder 10K; at 3033 Iris Ave., in Boulder; $26 to $47; 7 a.m. bolderboulder.com
June 1
Dan Peterson Memorial Main Street Mile; at Fruita Civic Center; race exactly 5,280 feet; 6:30 p.m. 970-260-4612 or 970-858-0360
June 3
Water Tower 5-mile desert run; 1.5 miles north of H Road on 27.25 road (northwest of the airport), in Grand Junction; 7:30 a.m.; $3. 970-241-6478
TRAIL RUNNING
May 27
Garfield Grumble; 5-mile extreme trail run, with more than 2,000 feet elevation gain; starts at Garfield trailhead northwest of Palisade; 8 a.m.; $3. 970-245-4243 or 970-245-4382
June 3
U.S. 10K Trail Running Championships, X-1 Mud Run 5K; in Vail; national championship race on Vail Mountain; pro and amateur divisions; $30 for 10K, $25 for 5K. tevamountaingames.com
SKYDIVING
Ongoing
Mile-Hi Skydiving Center; full jumping operations; weekdays 9 a.m. to sunset, weekends 8 a.m. to sunset. 303-702-9911 or mile-hi-skydiving.com
TREE CLIMBING
May 27-28
Basic tree climbing course; sanctioned by Tree Climbers International; covers the basics needed to begin recreational/technical tree climbing, including rope instruction and knotcraft, equipment, hazards, tree selection, tree climbing ethics and more; all equipment provided; 16- to 18-hour course; $450; in Evergreen. treeclimbingco.com or 303-526-2904
TRIATHLON/DUATHLON
Saturday
Superior Kiwanis Youth Triathlon; ages 6-15; various lengths for various ages; solo and team; at Rock Creek Recreation Center, 1650 South Indiana Road, in Superior; $25 to $30. kiwanis-superior.org/triathlonmain.htm
YMCA of Pueblo Ordinary Mortals Triathlon; swim 525 yards, bike 12 miles, run 3 miles; at Pueblo County High School, 1050 35th Lane, in Pueblo; $50; 6:45 a.m. socorunners.org
May 27
Pelican Fest Triathlon; 800-meter open-water swim, 10-mile bike ride, 3.1-mile closed-route run; men, women, coed and relay; $45 to $55, relay $80 to $85 at Water Valley South, in Windsor; 8 a.m. pelicanfest.com
LECTURES/CLASSES
Today
Training discussion with Colleen Cannon, 1984 world champion and former pro triathlete, and Lorraine Moller, four-time Olympian and winner of the Boston Marathon; 7 p.m. outdoordivas.com
May 21
“Lost Proofing” Exercise at White Ranch Park; near Golden; Sierra Club field trip and introduction to three methods for knowing where you are: terrain association, compass resection and GPS; 5-mile hike; 9 a.m. to 1 p.m. 720-837-0074 or bill.campbell@rmc.sierraclub.org
MISCELLANEOUS
Saturday
GPS and Map Reading Skills Treasure Hunt; basic GPS operation and navigation in the morning followed by an afternoon of hands-on activities and treasure hunt; bring a GPS unit, compass, pencil and paper; by Dave Hill, local Search and Rescue volunteer and retired Air Force navigator; $30; 9 a.m. to 3 p.m. yampatika.org or 970-871-9151
