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 team; amateurs and pros. tevamountaingames.com
CLIMBING
June 3
Volkswagen Bouldering Competition; in Vail; all ages and abilities; $30. tevamountaingames.com
June 4
Speed Bouldering Competition; in Vail; head-to-head race, fastest times to complete problems advance; $20. tevamountaingames.com
June 4
Freestyle Dyno Comp; in Vail; format awards points for difficulty and style; $30. tevamountaingames.com
CYCLING
Mountain and road
Wednesday
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
Friday
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
Saturday
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
Saturday-Sunday
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
June 2-4
Compass Bank Elephant Rock Cycling Festival; inaugural 24-hour mountain-bike race, will be June 2-3 on 8.25-mile loop course in Greenland Open Space Park, starts 6 p.m.; limited entries; $250-$750. 303-282-9020 or elephantrockride.com
June 3
Vail Pass Hill Climb; in Vail; Coors Classic course up Vail Recreation Path; 9.7 miles, time trial format; $30. tevamountaingames.com
June 4
City Park Criterium; a technical course; the oldest criterium in Colorado; at City Park, in Denver. rockymountainroadclub.com
19th annual Compass Bank Elephant Rock Cycling Festival; six road and off-road courses for all abilities: 100-mile road, 65-mile road, 50-mile road, 32-mile road, 8-mile family road, 22-mile canyon; at Douglas County Fair Grounds, in Castle Rock; $25 to $60; start times vary, 5:30-9:30 a.m. elephantrockride.com
Nature Valley X-Country; in Vail; NORBA-sanctioned race on front side of Vail Mountain; $25. tevamountaingames.com
KAYAKING
Saturday-Sunday
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
June 1
East vs. West Amateur Kayak Rodeo; in Vail; contest between Front Range and Western Slope; $20. tevamountaingames.com
June 1
Paddler Magazine Extreme Creek Race; in Vail; timed race down Class V Homestake Creek; $30. tevamountaingames.com
June 8-11
Canoe Trip on the Gunnison River with The Women’s Wilderness Institute; $550 includes food and equipment. womenswilderness.org or 303-938-9191
RUNNING
Sunday
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
Monday
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 2
Gisolfi Fun Run and Walk; 5K; at City Park, in Denver; 6:30 a.m. bkbltd.com
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
Rocky Mountain Health Plans 5K Run/Walk for Girls on the Run; Denver City Park; $10 to $25; 9 a.m. girlsontherundenver.com
Berthoud 5K Run for Habitat; $20 to $25; free kid’s 1K; 8 a.m. berthoudhabitat.org
Baby Bear Hugs annual 5K Run/Walk; at Limon High School, in Limon; 9 a.m. 719-734-2526
June 4
25th annual Steamboat Marathon, Half Marathon and 10K; in Steamboat Springs; start in Hahns Peak Village, follow a paved country road down the Elk River Valley and finish downtown; $30 to $60; 7:30 a.m. steamboatmarathon.com
June 10
30th anniversary Run the Rockies Half-Marathon and Ten Mile Creek 10K; in Frisco; 8:30 a.m.303-635-2815 or emgcolorado.com
TRAIL RUNNING
Saturday
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
Balarat Trail Run; 6-mile trail run, to support outdoor education activities for Denver Public School students; at Elk Lodge at Balarat Outdoor Education Center, in Jamestown; 10 a.m. balarat.dpsk12.org
Tri-Trail Challenge; a 10-mile, three-segment trail event; 10K hill loop with 700-foot climb, a 1K time trial, and a rolling 5K; in Evergreen; $20 to $25; 8 a.m. eclecticedgeracing.com
TREE CLIMBING
Saturday-Sunday
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
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
May 31
Surf & Turf Aquathon 2006; six-race series; series championship Sept. 6; at Chatfield State Park, Gravel Pond, in Littleton; individual race, $27; five-race series, $125 to $165; short course: 500-meter swim, 5K trail run; long course: 1,500-meter swim, 5K trail run. aquathonusa.com
June 3
Clear Creek Challenge; a three-part event, with 5-mile cross country run, 20-mile bike and a 12-mile, Class III/IV whitewater paddle; with 3,400 feet of vertical descent, the most for any multi-sport race in the world; at Loveland Ski Area, in Georgetown; solo, $60; team, $105; 9 a.m. clearcreekchallenge.org
Longmont’s “Kids Only” Triathlon; ages 7-17; at Centennial Pool, 1201 Alpine St., in Longmont; ages 7-10: 125-yard swim, 3-mile bike, 0.6-mile run; 11-12: 325-yard swim, 6-mile bike, 1.2-mile run; 13-17; 425-yard swim, 6-mile bike, 2-mile run; 7:30 a.m.; $25. coloradoyouthtriseries.com
June 4
26th annual Twin Peaks Triathlon; 525-yard swim, 16.5-mile bike and 3.5-mile run; at Centennial Pool, 1201 Alpine St., in Longmont; solo or team; $60 to $80; 6:45 a.m. 303-774-4562
