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 Dog Days and takes place in a location described as central between Denver and Boulder. Courses run northeast along the Big Dry Creek Trail and the 10K and half marathon routes include a significant amount of soft surface. The course offers views of the Flatirons. The race is an official BOLDERBoulder qualifying event; finishing times from any distance can be used to qualify for 2027 BOLDERBoulder waves. Virtual options are available and include alumni credit and event SWAG.
- Half Marathon
- 10K
- 5K
- VIRTUAL Half Marathon
- VIRTUAL 10K
- VIRTUAL 5K
The listed entry fees for in-person events are: half marathon $64.60, 10K $43.40, and 5K $32.80 (fees included). Virtual event fees are listed separately.
Dogs and charity
The event includes a separate dog division for each distance. The first three finishing dogs in each distance receive a medal, award, and prize, and dogs must be registered to run on the morning of the event. There is also a dog-themed costume contest. The event benefits Lifeline Puppy Rescue, a no-kill shelter that rescues puppies and mom dogs in the Rocky Mountain region; representatives and puppies will be present after the run. Visit the organization's website for the most recent information.