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 (attn: Outdoor Extremes). Please include a contact number. Items will run on a space-available basis.
ADVENTURE RACING
June 2-3
GNC Ultimate Mountain Challenge; in Vail; cross country mountain bike, road bike time trial, 10K trail run, class II kayak; solo or team; $100 solo, $150 teams. tevamountaingames.com
CLIMBING
Tuesday
Lecture with Micah Dash: Climbing in Pakistan and Greenland; climber and alpinist will present a show of several recent expeditions, including big-wall free climbing in Greenland, the first one-day ascent of “Nameless” Trango Tower and the second ascent of Cats Ear Spire in Pakistan; 7 p.m.; at Colorado College, Tutt Science Center Lecture Hall, Colorado Springs; free. coloradocollege.edu
Thursday
Presentation with Josh Wharton: A Climbing Slide Show; covering recent climbing trips to Pakistan and Patagonia, including a boltless ascent of the Compressor Route on Patagonia’s Cerro Torre; with the climbing association of Colorado College; 7 p.m.; at Gates Common Room, in Colorado Springs; free. coloradocollege.edu
May 1
Evenings with DIVAS; free climbing clinic; in Boulder; 7 p.m. outdoordivas.com
CYCLING
Mountain and road
Saturday
Colorado College Criterium bike race; with the CC cycling team; course through campus with laps on Cascade Avenue; open to all USCF categories; noon; free. coloradocollege.edu
Sunday
Do-it-yourself Bike Repair; with South Suburban Parks and Recreation; ages 8 to adult; learn how to repair flat tires, lube the bike, adjust brakes and gears and what tools to carry; 1:30-3:30 p.m.; $19 to $24 solo, $35 to $45 family. sspr.org or 303-347-5999
April 20-22; May 11-13
Mountain Biking Singletrack Sampler; three days on a singletrack near Fruita, with individual instruction from professional bike coach and trainer Rhonda Mayo; for beginning and intermediate riders; covers foundational and technical skills; $435. womenswilderness.org or 303-938-9191
April 21
Family Bike Ride; in Highlands Ranch; learn trail etiquette and see wildlife on bike ride down the High Line Canal; $6-$7; 9-10:30 a.m. highlandsranch.org or 303-791-2710
April 26-29
12th annual New Belgium Brewing Fruita Fat Tire Festival; in Fruita. fruitamountainbike.com or 970-858-7220
May 4-5
Third annual New Belgium Brewing 18 Hours of Fruita. fruitamountainbike.com or 970-858-7220
HIKING
Tuesday
Wilderness Trekking School; Colorado Mountain Club’s beginner hiking school; teaches the basics of mountaineering and hiking; includes five weekly lectures and five weekend field days; $80; 7 p.m.; in Golden. wts.cmcschools.org or 303-279-3080
April 23
L2S hiking and backpacking training; also June 18, June 25, Aug. 20; one gym/classroom session and one hike weekly to improve endurance and prevent injury; learn the basics of packing, nutrition and safety; eight-week program: $360, or $15 per class, $30 per hike. L2S-livehealthy.com or 720-352-3638
April 28
International Mountain Bicycling Association TrailBuilding School; learn to build and maintain local trails; includes classroom and field instruction; covers basic construction, sustainable trail design, turns and drainage and bridges, reroutes, reclamation and rockwork. Also, Trails 2000 will celebrate National Trails Day on June 2 and host Elbert Creek trailwork with the Backcountry Horsemen on June 16. trails2000.org or 970-259-4682
KAYAKING
May 29
East vs. West Amateur Kayak Rodeo; in Avon; team kayak rodeo contest between Front Range and Western Slope teams; at Whitewater Park; $20. tevamountaingames.com
May 30
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 raft teams, $30 kayak. tevamountaingames.com
May 31
Dagger Steep Creek Championship; in Redcliff; timed race down Class V Homestake Creek; $30. tevamountaingames.com
Ongoing
Lessons and open pool sessions hosted by Golden River Sports; Tuesdays and Thursdays, 6:30-8:30 p.m.; reservations required; Golden Recreation Center. 303-215-9386
Open pool session and beginner and expert lessons hosted by Confluence Kayaks; 8-10 p.m. Tuesdays; lesson with gear, $45, open pool access only, $10; reservations required; University of Denver’s El Pomar Natatorium, 2201 E. Asbury Ave. 303-433-3676 or confluencekayaks.com
Open pool session hosted by Pikes Peak Whitewater Club and Colorado Kayak Supply; 5-7 p.m. Sundays; introductory lessons from 4-5 p.m.; Cheyenne Mountain High School pool, 1200 Cresta Road, in Colorado Springs. pikespeakwhitewaterclub.com
RUNNING
Today
Dash and Dine 5K No. 1; in Boulder; part of a 5K race series every Tuesday through May 15; starts at Coot Lake; $15 to $20; official Bolder Boulder qualifier; 6:30 p.m. 303-939-8000
Saturday
Divinity Dash is a 5K Walk/Run; includes a kids’ fun run; for runners, walkers and families; strollers, baby joggers, dogs and roller blades welcome; in Parker; 9 a.m. tlcas.org/dd.html
UCCS Bash the Bluffs 3-Mile Run; at the University of Colorado at Colorado Springs; mile course starts and finishes at the University Center; runner and walkers; $18-$23; 8 a.m. uccs.edu/recsports
Denver Fit training programs for the Denver Marathon and Half Marathon; all levels welcome; 26-week program. denverfit.com or 303-721-1520
Go Metro State Downtown 5K; at the Tivoli, Auraria Campus, in Denver; a flat and fast 5K in downtown Denver that starts and finishes in front of the Tivoli; free parking; an official Bolder Boulder qualifier; $25; 8 a.m. studentactivities.mscd.edu/5k
Horsetooth Half Marathon; at Hughes Stadium in Fort Collins; point-to-point course finishing at New Belgium Brewery; $40-$50; 8:30 a.m. horsetoothhalfmarathon.com
Canine Classic 5K & 10K Run/Walk with Dogs; at Boulder Reservoir in Boulder; an official qualifier for Bolder Boulder; $15-$30; 9 a.m. movingtoendsexualassault.org
April 21
Fast and the Furriest 5K/1K walk-run; at CSU Veterinary Medical Center in Fort Collins; $10-$22; 9 a.m. 520-403-5002
Ryan Elementary 5K Fun Run/Walk; in Westminster; $15-$20; all ages; 8 a.m. 303-982-3105
20th annual Elbert Reflections; 5K and 10K; at Elbert Park Track in Elbert; run on gravel roads; $16-$18; 9 a.m. 303-648-3030 or pprrun.org
April 21-22
Survivor Stride ’07 Denver; walk/run individually or as a team; $14-$20. survivorstride.com
April 21-May 6
Toyota Benefit Running Series; includes the James “Spank” Blasing Memorial 5K on April 21 and the Cinco de Mayo 10K Run and Fun Walk on May 6; at CSU-Pueblo/State Fair Grounds in Pueblo; $30-$45; 8 a.m. starts.
April 22
Belleview Chiropractic 5K Run/Walk; $25; at Cherry Creek State Park in Greenwood Village; an official Bolder Boulder qualifier; USATF-certified 5K; 9 a.m. belleviewchiro.com
Earthday 10K and Eco-adventure Walk; at Paepcke Park in Aspen; $10-$30; 9 a.m. 970-925-1481
Wild Oats Earth Day 4K; in Boulder; $8-$25; 9 a.m. conservationcenter.org
May 12
Columbine High School Run For Remembrance; 5K competitive run and 5K fun run/walk; more than 900 runners last year; in Littleton; $25; 8 a.m. jeffcoweb.jeffco.k12.co.us/high/columbine or active.com
May 20
Miles for Smiles 5K run/walk; at the new Broomfield Commons Park; on mostly open space trails; $13 to $25; 9 a.m. twoangelsfoundation.org
TRAIL RUNNING
Saturday
Greenland Trail 50K, 25K and 8M; trail is a non-technical doubletrack through prairie and grasslands up against the foothills; only 500 feet of elevation gain and loss; at Greenland Open Space in Greenland; $30 to $50; 8 a.m. greenland50k.com
April 20-22
Desert R.A.T.S.: Spring Desert Ultra Trail Running Festival; in Fruita; Saturday is a trail run of 25 or 50 miles; Sunday has 5- and 10-mile trail races; 5-mile: $25, 10-mile; entire weekend: $100. geminiadventures.com
April 21
HRCA Heritage/Adventure Run 5K and 10K; run/walk along the Dad Clark Trail; at Mountain Vista High School in Highlands Ranch; $25-$45; 8:30 a.m. highlandsranchrunseries.com
April 21-Aug. 12
La Sportiva Front Range Trail Frenzy Series; includes five races: April 21, Chatfield 7.5-mile; May 20, Castlewood Canyon 6.5-mile; June 23, Buffalo Creek 12K; July 21, 5th annual Golden Gate Canyon Trail Run 12.7-mile; Aug. 12, Lookout Mountain Hill Climb 4.5-mile; $60-$90; 8 a.m. runuphillracing.com
April 28
Garfield Grumble Extreme Trail Experience; try to run or walk about five 5 miles; 2,000-foot elevation change; start at Palisade Trailhead at base of Mount Garfield in Grand Junction; $4; 8 a.m. 970-245-4382 or boogidieshoe@acsol.net
SAILING
May 31-June 3
S.A.I.L. sailing class for beginners; intense, four-day, 40-hour course covers psychology, lesson planning and on-the-water techniques; all levels; at Cherry Creek Reservoir; $280-$300. ussailing.org or 303-757-7718
Ongoing
Colorado State Parks boating safety classes; at various locations; open to adults and teens; includes a home-study manual, a two-hour classroom review and a written exam. parks.state.co.us
BACKCOUNTRY SKIING
May 4-6
Backcountry ski mountaineering hut trips to Summit County; for advanced intermediate and better; telemark, alpine or snowboard, women only; must have previous backcountry experience;includes breakfast and dinner at the hut, lodging, snacks, backcountry safety equipment and guided instruction, and morning yoga; $350. babesinthebackcountry.com or 970-453-4060
SKIING/SNOWBOARDING
Sunday
39th annual Spring Splash; at Winter Park Resort; includes old-school ski and snowboard categories; skiers and riders get through obstacles on the Larry Sale race course and skim across an icy pond to reach the finish line; noon. winterparkresort.com or 970-726-5514
April 21
Vert Alert Terrain Park Competition Session No. 2; annual freestyle ski and snowboard competition at Love Park; at Loveland Ski Area. skiloveland.com
Silverton Mountain Hardcore Challenge COSMIC backcountry ski race; at Silverton Mountain in Silverton; $60 includes lift ticket; men’s and women’s divisions; three ability levels; 10 a.m. cosmicski.com
April 28
Sixth annual Corn Harvest Benefit Ski Party at Loveland Ski Area; for the Colorado Avalanche Information Center. skiloveland.com
TRIATHLON/DUATHLON
Saturday
TRI the RIM Triathlon; at Fort Lewis College in Durango; 500-yard swim in the FLC pool, 12-mile bike ride around the rim and 4-mile run around campus on trail and pavement; $25-$30; 10 a.m. fortlewis.edu/community_culture/tri_the_rim
MISCELLANEOUS
Sunday
Introduction to tree climbing; with South Suburban Parks and Recreation; ages 7 to adult; noon to 3:30 p.m.; with a certified instructor; arborist ropes and harnesses hoist participants safely into the treetop without damaging the tree; a basic level of fitness required; $21 to $29. sspr.org or 303-347-5999
SKI AREA CLOSING DATES
Sunday
Aspen Mountain
Beaver Creek
Copper Mountain
Eldora
Keystone
Snowmass
Steamboat
Winter Park
April 22
Breckenridge
Vail
May 2
Silverton
May 6
Loveland
June 5
Arapahoe Basin
Closed
Aspen Highlands
Buttermilk
Crested Butte
Echo Mountain
Howelsen Hill
Monarch Mountain
Powderhorn
Purgatory (Durango)
Ski Cooper
Sol Vista
Sunlight
Telluride
Wolf Creek
