Get ready for a fantastic mid-season challenge and a sun-soaked adventure at our 14th Annual Dog Days 5K, 10K, and half marathon, proudly benefiting Lifeline Puppy Rescue! Held in a central location convenient to both Denver and Boulder, our courses go along the scenic Big Dry Creek Trail as it winds northeast. You’ll enjoy breathtaking views of the Flatirons on the horizon while you run.
This event is perfect for both human and dog athletes! The trail offers a generous amount of soft surface, especially along the 10K and half marathon routes, making it ideal for dogs. We celebrate our canine competitors with a separate dog division for each distance, where the first three finishing dogs will receive a medal, award, and prize. (Just remember to register your dog the morning of the event!) . For extra fun, join our dog-themed costume contest!
This family- and dog-friendly event includes:
The flexibility of running or walking 5K, 10K, or half marathon distances to meet your fitness goals and so you can participate with your friends and family
An awesome, super-soft tech running shirt, full-color medal, and event-specific bib for all distances
Chip timing and accurately measured courses
Awesome post-race meal including breakfast burrito and chocolate milk
Lots of free course and finish line photos
We are inclusive and support athletes of all abilities, including no time limit on the run/walk
Save 25% by registering for all three All-Out summer events at the same time!
All-Out matches all athlete donations to the benefiting charity, Lifeline Puppy Rescue
