Name: All-Out Dog Days
Start: 2027-07-10
End: 2027-07-10
Location: Westminster

About the Event

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.

Races Offered

Half Marathon

Jul 10, 2027

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Distance — 21.1K

terrain

Type — Running

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07:00

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$65.00

VIRTUAL 10K

Jul 10, 2027

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Distance — 10K

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Type — Running

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07:00

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$25.00

VIRTUAL 5K

Jul 10, 2027

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Distance — 5K

terrain

Type — Running

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07:00

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$20.00

VIRTUAL Half Marathon

Jul 10, 2027

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Distance — 21.1K

terrain

Type — Running

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07:00

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$35.00

10K

Jul 10, 2027

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Distance — 10K

terrain

Type — Running

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07:30

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$45.00

5K

Jul 10, 2027

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Distance — 5K

terrain

Type — Running

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07:40

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$35.00

Weather History

These values represent the 3-year monthly averages for July in Westminster.

thermostat Temperature

15.3° / 31.6°

wb_sunny Feels like

14.1° / 29.0°

light_mode Avg sunshine hours

12h 59m

water_drop Avg rainfall

1.2 mm

ac_unit Avg snowfall

—

air Avg wind speed

7.8 km/h (Light breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Very High (8.0)

humidity_mid Humidity

44.8%

wb_twilight Sunrise

05:45

nightlight Sunset

20:25

About Westminster

Learn more about the host city, Westminster.

Westminster is a city of about 115,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The city lies northwest of Denver in Adams and Jefferson counties.