Run or walk a 5K at Cherry Creek State Park to support clean water, enjoy the outdoors, and perhaps show off a creative costume.

• Fun
• Competitive
• Quirky
• For a Cause

Sat, May 9, 2026, 10:00 AM MDT·3.1 Miles·Aurora, CO

EasygoingRUN

Course · Timed race

Run a scenic 14-mile loop around Vallecito Lake, featuring unique course access and a fantastic post-race party that supports local causes.

• Fun
• Scenic
• Festive
• For a Cause

Sat, May 16, 2026, 9:00 AM MDT·14 Miles·Bayfield, CO

Serious TestRUN

Course · Mixed · Hilly · Family-oriented

Embrace the unique Backyard Ultra challenge: complete a 4.17-mile lap every hour until you're the last runner standing, all for a good cause.

• Fun
• Competitive
• Quirky
• For a Cause

Challenge yourself to a nationwide mile race, offering both virtual flexibility and an exciting in-person track experience.

• Fun
• Competitive

Sun, Jun 7, 2026, 9:30 AM MDT·1 Miles·Anywhere, CO

EasygoingRUN

Course · Mixed · Timed race

Celebrate fatherhood and family with a timed 5K run/walk that supports local schools, followed by a community picnic.

• Fun
• Competitive
• Festive
• For a Cause

Sat, Jun 20, 2026, 9:00 AM MDT·5K·Colorado Springs, CO

Push PotentialRUN

Course · Hilly · Timed race

A welcoming track and field series in Boulder, offering a full schedule of events for all ages and skill levels on a brand new track.

• Fun
• Competitive

Thu, Jun 25, 2026, 8:00 PM MDT·100m, 200m, 400m, 800m, 1500m, 3K·Boulder, CO

Steady EffortRUN

Course · Hilly · Timed race

Challenge your grit at 10,600 feet in Alma, CO. This multi-sport dirt festival offers demanding courses, stunning views, and a warm community vibe.

• Fun
• Scenic
• Competitive
• Quirky
• Festive

Sat, Jun 27, 2026, 7:00 AM MDT·6.1 Miles, 6.2 Miles, 13 Miles, 13.1 Miles, 22 Miles, 26 Miles, 38 Miles·Alma, CO

Serious TestDUATHLON

Course · Trail · Hilly · Family-oriented

Conquer 2,200 feet of vertical to Hahns Peak's summit for unparalleled views and a unique trail challenge.

• Fun
• Scenic
• Competitive
• Quirky
• Festive

Sun, Jul 5, 2026, 8:30 AM MDT·8 Miles·Clark, CO

Steady EffortRUN

Course · Trail · Timed race

A friendly track & field series in Boulder, welcoming all ages and skill levels from first-timers to seasoned competitors.

• Fun
• Competitive

Thu, Jul 9, 2026, 8:00 PM MDT·100m, 200m, 400m, 800m, 1500m, 5K·Boulder, CO

Steady EffortRUN

Course · Hilly · Timed race

A scenic trail run through wildflowers and Aspens in Steamboat Springs, honoring a local memory and promoting trail sharing.

• Fun
• Scenic
• For a Cause

Sat, Jul 18, 2026, 8:00 AM MDT·3.1 Miles, 9.5 Miles·Steamboat Springs, CO

Serious TestRUN

Course · Trail · Hilly · Timed race

A welcoming summer track series in Boulder, perfect for both new runners and veteran competitors to test their speed in the 800m.

• Fun
• Competitive

Thu, Jul 23, 2026, 7:00 PM MDT·100m, 200m, 400m, 800m·Boulder, CO

EasygoingRUN

Course · Timed race

Step onto the historic track at CU Boulder's Potts Field for a welcoming summer track and field series, offering unique events for all abilities.

• Fun
• Competitive
• Quirky

Thu, Aug 6, 2026, 6:30 PM MDT·100m, 200m, 400m, 800m, 1500m·Boulder, CO

Steady EffortRUN

Course · Hilly · Timed race

A fun, low-key midweek trail series in Bellvue, CO, perfect for dipping your toes into trail racing or sharpening your speed.

• Fun
• Competitive

Tue, Aug 18, 2026, 6:00 PM MDT·5K·Bellvue, CO

Push PotentialTRAIL

Course · Mixed · Hilly · Family-oriented

A low-key midweek trail series offering a fast 12K on the Valley Trail, perfect for sharpening speed or dipping into trail running.

• Fun
• Competitive

Tue, Aug 25, 2026, 6:00 PM MDT·12K·Bellvue, CO

Serious TestTRAIL

Course · Mixed · Hilly · Family-oriented

Run or walk a 5K through stunning winery scenery, then celebrate with a pour of wine and a medal that doubles as a wine stopper.

• Fun
• Scenic
• Competitive
• Quirky

Sun, Aug 30, 2026, 9:30 AM MDT·5K·Canon City, CO

Push PotentialRUN

Course · Hilly · Walkers welcome

Run a gorgeous, downhill course through the Poudre River Canyon, then celebrate your finish with music and beer at a lively party.

• Fun
• Scenic
• Competitive
• Quirky
• Festive

Sun, Sep 20, 2026, 8:00 AM MDT·5 Miles, 13.1 Miles·Fort Collins, CO

Steady EffortRUN

Course · Rolling · Timed race

Join the Dialysis Dash 5K to support local dialysis patients and raise kidney disease awareness in a fun, family-friendly community event.

• Fun
• For a Cause

Sat, Oct 10, 2026, 11:00 AM MDT·5K·Grand Junction, CO

Steady EffortRUN

Course · Hilly · Family-oriented

Experience Fort Collins's premier trail marathon, a scenic and challenging journey through the Front Range hogbacks with a welcoming finish.

• Fun
• Scenic
• Competitive

Sat, Oct 17, 2026, 7:00 AM MDT·13.8 Miles, 26.7 Miles·Fort Collins, CO

Push PotentialTRAIL

Course · Trail · Rolling · Timed race

A stress-free, supportive run with a sweet PB&J theme, where every mile you log after the race contributes to charity.

• Fun
• Quirky
• For a Cause

Sat, Oct 31, 2026, 7:30 AM MDT·1 Miles, 5K, 10K, 13.1 Miles·Centennial, CO

Push PotentialRUN

Course · Hilly · Timed race

A festive Halloween-themed run in Colorado Springs, perfect for families and runners seeking a fun, spirited race experience.

• Fun
• Festive

Sat, Oct 31, 2026, 8:00 AM MDT·3.1 Miles, 6.2 Miles·Colorado Springs, CO

Push PotentialRUN

Course · Hilly · Walkers welcome

A low-key, competitive 15K or 5K in Denver's open space, featuring a unique handicap start for the 15K.

• Fun
• Scenic
• Competitive
• Quirky

Sun, Nov 1, 2026, 8:30 AM MST·5K, 15K·Denver, CO

Push PotentialRUN

Course · Mixed · Rolling · Timed race

Embrace the holiday spirit with a family-friendly Thanksgiving-themed run in Denver, featuring distances for everyone and festive swag.

• Fun
• Festive

Sat, Nov 7, 2026, 8:00 AM MST·50m, 1 Miles, 3.1 Miles, 6.2 Miles, 13.1 Miles·Denver, CO

Push PotentialRUN

Course · Rolling · Walkers welcome

Push your limits for 6, 12, or 24 hours on a scenic dirt loop, enjoying a supportive atmosphere and fueling a great cause.

• Fun
• Scenic
• Competitive
• For a Cause

Start Thanksgiving with a festive 2-mile fun run, complete with music and turkey costumes, all while supporting KidsPak in Loveland.

• Fun
• Quirky
• Festive
• For a Cause

Thu, Nov 26, 2026, 8:00 AM MST·2 Miles·Loveland, CO

Steady EffortRUN

Course · Rolling · Timed race