All-Out Dog Days Half Marathon

All-Out Dog Days Half Marathon is a half marathon held in Westminster, US, in July. The event sits on the Big Dry Creek Trail in Westminster, Colorado, and also offers a 10K and a 5K alongside the half.

Routes head northeast along the creek on paved concrete paths, with a good share of softer surface on the longer two distances, which suits running with a dog. Views toward the Flatirons on the horizon keep the paths feeling open and scenic.

Dogs have their own division at every distance, and the top three dogs in each are recognised. A dog-themed costume contest adds a lighter side for people who would rather enjoy the morning than race it. The day is pitched as a mid-season challenge for both human and canine runners, and proceeds go to Lifeline Puppy Rescue. Virtual entries exist for each distance for anyone who cannot attend in person.