Nothing cools off summer heat like the backsplash from a paddle.

For some, this standard marathon distance offers a nice prep run for the heralded Leadville 100 in August. For others, it's a longtime bucket-list goal.

Roll through the beautiful areas around Castle Rock to welcome back Colorado cycling season in style. Riders can choose between 32-, 62-, or 100-mile road routes.

Meditate, hike, and bike your way into a new state of mind. This one-of-a-kind festival returns to Boulder with a bevy of yoga teachers, speakers, and musicians.

Help make a difference a world away just by walking through a popular neighborhood park. The nonprofit Hands4Others is hosting a walk designed to raise awareness to providing safe drinking water to a destitute Indonesian village. Since 2008, the youth-led organization has helped provide sustainable water to more than 100,000 people in need.

Celebrate your love for outdoor sports with fellow fitness fanatcis. Watch the IFSC Bouldering World Cup and the Slackline World Championship when you're not participating in world-class mountain biking, running, and boating competitions of your own. Take a breather from the action with the photography competition, film festival, and free concerts by Black Joe Lewis and Ballyhoo!.

This is a party worth cleaning up for. The South Platte River, Denver's urban waterway, is hosting the entire community for a weekend of paddle boarding, live music, kids activities, and conservation efforts. Curious about people paddling atop Colorado's lakes and rivers on giant surf boards?

Sometimes change is as easy as taking a walk. Stroll around City Park to help raise money for defeating a crippling disease. Since the walk began 25 years ago, ten new treatments have been discovered to aid more than 100,000 Colorado and Wyoming residents with Multiple Sclerosis.

Turn your normal Saturday stroll into a memorable ride as you cycle through Boulder County with a pair of national champion pro cyclists. Let Heather Irmiger and Jeremy Horgan-Kobleski guide you through the road bike ride with your option of taking a 35-mile or 55-mile route. The ride is preceeded by a quick breakfast and followed by a four-course meal courtesy of Pasta Vino.

Cast your line into the Aurora Reservoir and you could reel in a $10,000 check. The fisherman or woman who catches the heaviest trout takes home the big money and a great "big fish" story. If you're not in it for the money, spend a day outdoors with the kids and be eligible for additional prizes including a raffle.