All-Out Dog Days
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Event overview
All-Out Dog Days is scheduled for July 11, 2026, at Big Dry Creek Trail in Westminster, Colorado. The event is the 14th annual running of these races and includes both in-person and virtual options. The event benefits Lifeline Puppy Rescue, a no-kill shelter that rescues puppies and mother dogs across five states and from a network of 33 shelters and rescue groups. Donations at the event support that rescue work, and some puppies will be present after the race.
Race details and features
Distances offered:
- Half Marathon : in-person and virtual options
- 10K : in-person and virtual options
- 5K : in-person and virtual options
Courses run along the Big Dry Creek Trail and wind northeast along the creek. The 10K and half marathon routes include a notable amount of soft surface suitable for dogs. The course provides views of the Flatirons on the horizon. The event includes a separate dog division with awards for the first three finishing dogs at each distance and a dog-themed costume contest. Finishing times from any distance can be used to qualify for 2027 BOLDERBoulder waves. The event is part of a multi-race series offering a 25% discount per distance when registering for three events. Visit the organization's website for the most recent information.