All-Out Dog Days
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All-Out Dog Days
All Out Dog Days is a running event held in Westminster, Colorado on July 11, 2026. The event offers in-person and virtual distances, with course activity organized along the Big Dry Creek Trail in Westminster, a location between Denver and Boulder.
Distances offered:
- Half Marathon
- 10K
- 5K
- VIRTUAL Half Marathon
- VIRTUAL 10K
- VIRTUAL 5K
The on-site courses run northeast along the Big Dry Creek Trail and include visible views of the Flatirons on the horizon. The 10K and half marathon routes include a generous amount of soft surface along parts of the trail, and the event includes a separate dog division for each distance. The first three finishing dogs in each distance receive a medal, award, and prize; dog registration takes place the morning of the event. A dog themed costume contest is also part of the event program. Virtual options allow participants to complete the same distances remotely.
The event is presented alongside other All-Out events and is linked to an ongoing series that includes a December counterpart called Fa La La. The organizers list additional race and series options connected to this summer schedule. Visit the organization's website for the most recent information.
