This is the debut of a Colorado pair that makes total sense: beer and boarding. Sample unlimited brews by 22 local breweries from 2 to 5 p.m., then sit back and watch (or participate in) a rail jam featuring a 25-foot ski ramp. The family-friendly day also includes music, a kid zone (pictured), and local food.

Forgo the pricey spa mad bath. Instead attack ten obstacles in this women-only 5K and get the mudbath free of charge. Trudge through the non-competitive, untimed course solo or bring a team of as many dirt-loving ladies as you can to form a wall-climbin', mudpit swimming pack.

For the U.S. men's national team, the path to Brazil begins in Denver. If the red, white, and blue hopes to make its way into the 2014 World Cup's field of 32, a win on Colorado soil against Costa Rica is critical.

Become part of a cycling ritual that's more than a century old. Race the Durango train across the 50-mile trek to Silverton in the legendary Citizen Tour, which is a timed event for the first time. The Iron Horse features a number of competition categories, inlcuding road race, time trial, and criterium.

Spanning centuries from the old explorers to today's thrill-addicted outdoorsmen, navigating through the rivers and whitewaters of Colorado is a long-standing state custom. Celebrate that tradition with a splash at PaddleFest in Buena Vista.

Remember those iconic "Dogs Playing Poker" paintings?

Warm weather means one thing for the avid golfer: a return to the fairway. Welcome back golf season by playing 18 holes on a course that has received wide acclaim and served as host for the 2010 Senior PGA Championship. The Hope Challenge, which is hosted by Denver Broncos' wide receiver Demaryius Thomas, includes a brunch buffet, dinner, as well as live and silent auctions.

Mom will be so proud that you're staying active. Show her how thankful you are of everything she's done by dragging her along for the 5K run. In fact, bring the whole family together to earn discounted rates on registration. This active holiday celebration also includes free admission to the Denver Zoo, raffle prizes, and awards for the top female and male finishers.

They've spent months training for this one race. No, we're not talking about professional marathon runners. We're talking about the young female speedsters from across Denver. Girls on the Run encourages girls aged 8-13 to have healthy and confident futures free of substance abuse or eating disorders. Join the athletes for the run/walk that loops around scenic Ferril Lake at City Park.

Want to take in Denver's best landmarks and get your blood pumping at the same time? The Colfax Marathon will do the trick. With a course straight through the heart of Denver, this 26.2-miler is again challenging runners to endure the country's longest street.