All-Out Dog Days
- Date
- July 11, 2026
- Distance
- Half Marathon · 10K · 5K & more
From the Organizer
Get ready for a sun-soaked adventure and a fantastic mid-season challenge with our 13th Annual Dog Days 5K, 10K & Half Marathon, benefiting Do Over Dogs! Held in a central location between Denver and Boulder, our courses wind northeast along the scenic Big Dry Creek Trail. As you run, you’ll enjoy breathtaking views of the Flatirons on the horizon. Our trail is perfect for dogs, featuring a generous amount of soft surface along the 10K and half marathon routes. Plus, we have a special dog division to award the fastest pups at each distance and a dog-themed costume contest for extra fun! And continue the challenge by participating in the endless series counterpart, Fa La La, in December.
Distances & Pricing
Race Location
About This Sport
From Endurance Grid's Founder
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More running races in CO
HRCA Highlands Point Circuit
Sam's Rainbow Run
Run for Donuts 5K/10K/13.1 DENVER/AURORA
Half Marathon · 10K · 5K
Into the Hills Eltuck 5k
5K
Frequently Asked Questions (FAQs)
- What is the All-Out Dog Days?
- All-Out Dog Days is a running event held in Westminster, CO. Learn more about the different endurance sports here.
- When and where is the All-Out Dog Days?
- Saturday, July 11, 2026 in Westminster, CO at 10170 Church Ranch Way, Westminster, CO. Check the official event page for exact start times and wave schedules.
- How do I register for the All-Out Dog Days?
- Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.
All-Out Dog Days
Jul 11, 2026