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All-Out Dog Days 2026

11jul7:00 am12:00 pmAll-Out Dog Days 2026

Event Details

All-Out Dog Days

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

Time

July 11, 2026 7:00 am - 12:00 pm(GMT-06:00)

Organizer

All-Out Multicourse Productions

We're the 5K, 10K, or half marathon you're looking for! We have 10 wonderful annual events that give you flexibility in choosing your distance every event (and upgrading or downgrading as you need). Our events are perfect for friend groups, families, dogs, and strollers, for walkers and runners alike, so that everyone can participate and achieve their fitness goals. We like to have fun at our events, with each having a theme and costume contest, but also mean something with a benefiting charity for each event where All-Out matches all athlete donations to the charity. Our events are community-sized (300-800 athletes), which means you won't get lost in the crowd and have a great chance at an award, but it's still large enough to feel like you're a part of something. We run on the region's concrete trails with some soft surface segments, and vary in difficulty from mostly flat to hill climbs. We focus on providing a great experience, including soft swag shirts or other great clothing item, finisher's medals for all distances, aid stations every 1.2 to 2 miles, post-race meal that includes breakfast burritos, tons of toilets at the venue, and other delightful surprises. And although we're community-sized events, we are a great Colorado experience for visitors from all over the world! We're also good training runs to prepare you for the larger Colorado events like Pike's Peak, BOLDERBoulder, and Colfax Marathon. And we aim to make it affordable to participate in events--check out the Ways to Save page for all the ways you can save money on event registrations.

Learn More

Church Ranch Office Park

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