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.
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
91°
Typical Low
59°
Chance of Rain
23%
Based on US Climate Normals data from Northglenn, 4 mi from the venue.
Host City
About Westminster, CO
Population
115,546
as of 2023
Elevation
5,551 ft
Nearest Airport
DEN
Denver International Airport · 19 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at All-Out Dog Days, put it on the calendar, and turn “someday” into a start date.
Coming Up
More Running races near Westminster, CO
Pioneer Prairie Dog Half, 10k & 5k
10K · 5K
Less than a mile away
All-Out Fall Fest
Less than a mile away
Big Waves Family 5K run/walk Presented by Brumate
5K
Less than a mile away
Westy Half & 5k
5K
Less than a mile away
From Endurance Grid
About This Sport
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.
Frequently Asked Questions (FAQs)
- What is the All-Out Dog Days?
- All-Out Dog Days is a running race held in Westminster, Colorado on July 11, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the All-Out Dog Days?
- Saturday, July 11, 2026 in Westminster, Colorado at 10170 Church Ranch Way, Westminster, CO. Check the event page for exact start times and wave schedules.
- How do I register for the All-Out Dog Days?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
All-Out Dog Days
Jul 11, 2026