All-Out Dog Days logo

All-Out Dog Days

All-Out Dog Days is a running race on July 10, 2027 in Westminster, CO, with entry fees from $55 to $85.

Date
July 10, 2027 (352 days to go)
Price
$55–$85
Sport
Running
Register →

From the Organizer

Get ready for a fantastic mid-season challenge and a sun-soaked adventure at our 15th 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 concrete-paved 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!

After conquering Dog Days, keep the challenge going by participating in the "endless series" counterpart, Fa La La, held in December.

Events

Half Marathon$85
10K$65
5K$55

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, 3 mi from the venue.

Sunrise 5:40 AMSunset 8:30 PMDaylight 14h 49m

Host City

About Westminster, CO

Population

115,546

as of 2023

City 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.

352

Days to train

Race
All-Out Dog Days
Date
July 10, 2027

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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.

Read the Guide

Running

From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Plan your trip

Make it a Racecation

Coming from out of town? There's more to Westminster than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.

Plan your trip to Westminster
Lodging
Flights
Rental Car
Activities

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 10, 2027. 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 10, 2027 in Westminster, Colorado at 10170 Church Ranch Way. 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 10, 2027

Register →