When is All-Out Mardi Crawl?

All-Out Mardi Crawl takes place on Feb 22, 2026. That's today.

Where is All-Out Mardi Crawl located?

All-Out Mardi Crawl is held in Arvada, Colorado, United States.

What distances are available at All-Out Mardi Crawl?

All-Out Mardi Crawl offers the following distances: 13.1M, 10K, 5K.

How do I register for All-Out Mardi Crawl?

You can register for All-Out Mardi Crawl through the official registration page.

What is the typical weather for All-Out Mardi Crawl?

Based on historical data, you can expect temperatures between 18°F and 47°F on race day. There's approximately a 4% chance of precipitation.

All-Out Mardi Crawl (5K-13.1M) - Feb 22, 2026 | Arvada, CO

Get ready to celebrate Mardi Gras, Colorado-style, at the 10th annual All-Out Mardi Crawl in Arvada, CO, on Sunday, February 22, 2026. This festive event, offering Half Marathon (13.1M), 10K, and 5K distances, kicks off from the award-winning Apex Center and promises a vibrant atmosphere for runners of all abilities. Typical race day conditions in late February see highs around 47F and lows around 18F, with a low 4% chance of precipitation, making for brisk but often clear running weather. This year marks a significant occasion as it will be the last All-Out event hosted at the Apex Center, so don't miss this final opportunity to experience the course from this beloved venue.

The race courses take runners west along the acclaimed Ralston Creek Trail, a "2020 Best of the Best" winner, through Arvada's picturesque open spaces and stunning golf course communities, featuring shady, creekside beauty. While the 5K and 10K are described as relatively gentle out-and-back routes, the Half Marathon offers a more challenging experience with an engaging loop around Blunn Reservoir (also known as Long Lake Regional Park). Runners will find ample support with aid stations every 1.3 miles on average, stocked with water, electrolytes, and energy gels. The Half Marathon alone boasts 12 opportunities to fuel up.

Beyond the scenic courses, the All-Out Mardi Crawl is renowned for its festive spirit, encouraging participants to don their Mardi Gras best for a costume contest. As an official BOLDERBoulder Qualifying event, it's also an excellent chance to earn a qualifying time for a coveted wave. The race welcomes everyone with a no time limit policy, ensuring support for walkers and runners alike, and even includes dog bowls at aid stations for furry companions. Finisher medals are awarded for all distances, accompanied by free on-site engraving, personalized bibs for early registrants, and complimentary race photos to capture your achievement. This community-focused event also supports the "I Have a Dream" Foundation Boulder County.