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Get ready for some fun in the sun and a great mid-season test of your training as we bring our 5th Annual Dog Days 1M, 5K, 10K & Half Marathon! Centrally located between Denver & Boulder just a mile off US 36 at Westminster’s award-winning City Park, along with its Endless Series sidekick in December… Fa La La, the beauty of our breathtaking Flatirons as a backdrop will inspire you every step of these 1M, 5K, 10K & Half Marathon courses along Big Dry Creek Trail… well known as a Colorado favorite!

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♦ RRCA Certified Race Director- Organization you can count on!
With 50+ events under the belt of our director and a staff with more than 15 years experience, your event will run smoothly. (Ha! No pun intended.)
♦ Early AND Race Day Packet Pick-Up- For those who like to prep in advance!
Sure, picking up early gets you another chance to win a prize, but no worries if you wait until race day… we make it quick & easy.
♦ Tech Shirts- No cotton allowed!
Super comfy, moisture wicking & gender specific.
♦ Finisher Medals- Yup, custom molded & distance specific, even for the 5K!
Then a little something special for our 1 Milers too.
♦ Even More SWAG- Icy towels… yours to keep!
Dripping with ice water and ready to cool your core temp at the finish line.
♦ Souvenir Race Bibs- With pull tags for your convenience!
Yet another keepsake to remember your day, plus your meal & prize tickets are right there at your finger tips.
♦ FREE Race Pics- Unlimited downloads are on us!
Professional photographers at the finish line AND on course… enjoy!
♦ Text Results & Placements- Individually sent to all who opt in!
Just provide your mobile number with your entry, then text the keyword ALLOUT to 550055 from that mobile device.  Yup… it’s that easy!
♦ Gear Check- No trips back to the car for our athletes… no sir-ee!
Leave it with us… we’ll keep an eye on it for you.
♦ Porta-Poos-A-Plenty- 3 Units for 500 people? What, are you crazy?
Ever had to run without using a restroom because the lines were too long? Us too… ouch! We provide more than TRIPLE the facilities as other events.
♦ Accurately Measured, Clearly Marked Courses- Race the distance you trained for!
Not a little more and not a little less… we measure each course no fewer than 3 times before race day.
♦ Start / Finish AND On-Course Medical Support- Nothing is more important than your safety!
Here’s hopin’ those guys are really bored, but just in case… each and every volunteer you pass knows who to call for help.
♦ Tons of Aid Stations- No need to carry any extra weight!
Not only will both water & electrolytes be handed to you at the finish line, but course aid stations are an average of just 1 mile apart.
♦ Disposable Timing Chips- No hassle at the finish line!
And no fees if you forget to return your timing chip either… we don’t need it back.
♦ Post-Race Meal- Breakfast burritos, fruit, bagels, chocolate milk & OTTER POPS for all!
Yup, even if you’re dead last… we’re not going anywhere until we cheer you in.
♦ Electronic Results- No more endless sheets of data to sort through!
All results scroll on easy to read computer screens in the expo area during the event and are posted online by the end of the day.
♦ 3 Deep Awards- Overall AND Divisions!
Events small enough to stay friendly and personal give you a better chance of landing on the podium! (1 Mile awards will be given to the top 3 in each gender only, for the time being.)
♦ Prizes Galore- If you’re registered, you’re entered… easy peasy! Just bring us your ticket at the start of your award ceremony and you’re in! (Psst… in most cases, everyone who sticks around for the giveaway goes home with a prize!)
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Final Endless Series Logo As a part of our first-of-its-kind race that doesn’t end, (yes, it goes on and on my friend), run the same distance at back-to-back events to measure your progress on identical Endless Series courses. Prizes may be awarded to those who beat their previous time!  Click here for more information.
New Virtual Race Graphic2 With about a gazillion reasons why you might not be able to join us on race day, we know you still want to race with your friends & family. Well, we’ve got your back! Space will be extremely limited, so get in early if you want to race from afar for any reason. Click here for more information.

Benefitting Charity

Dedicated in Support of Colorado Canine Rescue!

Rescuing ‘next-in-line’ dogs of all breeds from overcrowded shelters, Dog Days is presented in support of
the Colorado Canine Rescue. Run entirely by volunteers, and with no central location… only
foster homes, please consider a generous donation when you register!

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Coming Soon!

Maps & Course Deets

Site Map Directions Printable PDF

Westminster City Park
Just NW of 104th & Sheridan Blvd
Site Layout Pic- 112113

Please be sure to scroll to ‘Event Information’ for parking deets and please plan to utilize approved lots only.

1M Course  (30% Asphalt / 70% Concrete) Interactive Map Printable PDF
1 Mile athletes will leave the lot at City Park heading southwest on Big Dry Creek Trail. As an out-and-back course, athletes will run exactly .5 miles to the turnaround then return the way they came.
Male Record: Dylan Taylor- 6:25   Female Record: TBD   Course Average: TBD
5K Course  (13% Asphalt / 87% Concrete) Interactive Map Printable PDF
5K athletes will leave the lot at City Park heading southwest on Big Dry Creek Trail. As an out-and-back course, athletes will run approximately 1.5 miles to the turnaround then return the way they came.
Male Record: Nick Kadlec- 15:51 (5:07)   Female Record: Veronica Davis- 21:49 (7:02)   Event Average: 36:05 (11:38)
10K Course  (6% Asphalt / 83% Concrete / 11% Soft Surface) Interactive Map Printable PDF
10K athletes will leave the lot at City Park heading southwest on Big Dry Creek Trail. As a double out-and-back course, athletes will run approximately 1.5 miles to the 1st turnaround then return the way they came, passing City Park to run another 1.5 miles to the 2nd turnaround, before returning directly to the finish line.
Male Record: Julian Wheating- 34:20 (5:33)   Female Record: Sarah Bay- 40:19 (6:31)   Event Average: 1:06:11 (10:41)
Half Marathon Course  (3% Asphalt / 48% Concrete / 49% Soft Surface) Interactive Map Printable PDF
Half marathon athletes will leave the lot at City Park heading southwest on Big Dry Creek Trail. As a double out-and-back course, athletes will run approximately 1.5 miles to the 1st turnaround then return the way they came, passing City Park to run another 5 miles to the 2nd turnaround before returning directly to the finish line.
Male Record: Ryan Krol- 1:18:39 (6:01)   Female Record: Jeanni Seymour- 1:23:33 (6:23)   Event Average: 2:12:32 (10:07)
Aid Station Deets


Early: Thru 5/22 Advance: Thru 7/8 *Late: Thru 7/19 *Walk-Up
1M $30 / $25 (no swag) $35 / $30 (no swag) *$35 *$40
5K $35 / $30 (no swag) $40 / $35 (no swag) *$45 *$50
10K $40 / $35 (no swag) $45 / $40 (no swag) *$50 *$55
Half $60 / $55 (no swag) $70 / $65 (no swag) *$75 *$80

Too many race shirts to wear ’em all?  Not a fan of goodies in a bag?  That’s cool… just enter this discount code when you register and bam… $5 saved!  (Don’t worry, you’ll still be sportin’ that finish line bling with a burrito filled belly when you download all those free race pics!)

Discount Code:  NOSWAG

IMPORTANT: Your decision to forego your race SWAG and register at the reduced rate is final. The moment you provide payment information & click to process your entry, changing your mind to add a shirt and goodie bag later will not be an option under any circumstances.

*Because goodies must be ordered far enough in advance to have them printed & shipped, late and walk-up entrants will receive SWAG on a first come, first-served basis.  If the shirt size you prefer is unavailable when you register, please select your next best size to be sure you get one, then stop by the packet pick-up area after you race to see if a swap is possible.


Without YOU, these events simply wouldn’t be possible!

New Graphic- Earn Entries New Graphic- Earn Donations New Graphic- Earn Credits

From prep to packet pick-up, and from marshals to meal service, there are a variety of ways you can help. Sure…  when you volunteer, you can look forward to that warm & fuzzy feeling that comes by giving back, but with All-Out, there’s WAY more to it than that. There’s no experience necessary, but space is limited so please let us know you’re available right away! Athletes: We know endurance sports can take a big chunk out of your pocketbook and we’ve got your back.  Check out our ‘Earn a Free Entry’ program! Groups: Tired of those bake sales & car washes? We are happy to be a part of your fundraising efforts! (Donations begin with just 10 volunteers and you need not be an official nonprofit.) Students: Earn those credits in the most fun way possible!

Event Schedule

Monday, 5/22 11:59p Early Pricing Ends
Saturday, 7/8 11:59p Advance Pricing Ends
Wednesday, 7/19 11:59p Late pricing Ends & Online Registration Closes
Thursday, 7/20 4:00 – 7:00p Early Packet Pick-Up & Walk-Up Registration- Photo ID Required
Location:  TBD
Don’t wait until race morning to pick up your packet!  Why?  Prizes, prizes, prizes!  In most cases, our phenomenal sponsors contribute SO many that some or all who pick up early will go home with a little something extra.  Oh, and winning at packet pick-up will not reduce your chances of winning again on race day.
Saturday, 7/22 5:00a Volunteer Check-In
5:45a Race Day Packet Pick-Up & Walk-Up Registration- Photo ID Required
6:45a Half Marathon Walk-Up Registration Closes
7:00a Half Marathon Start
7:30a 5 & 10K Walk-Up Registration Closes
7:45a 10K Start
7:45a 1M Walk-Up Registration Closes
7:55a 5K Start
8:00a 1M Start
8:30a 1M Awards & Prize Drawing
8:45a 5K Awards & Prize Drawing
9:15a 10K Awards & Prize Drawing
10:00a Half Marathon Awards & Prize Drawing

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General Information

Directions – Westminster’s City Park is located just northwest of 104th Ave & Sheridan Blvd.  From US36, you’d go east on 104th Ave just under half a mile to the park entrance on the north side of the street.  Once inside the park, turn east & follow the main roads around to the venue.  Click here for a map or to get directions.

Parking – Athletes & spectators will be allowed to park in the lots indicated as ‘A’, ‘B’ and ‘C’ below only, leaving other lots available for park maintenance staff and the softball tournaments scheduled for the same morning.

Parking Map

Towels – It’s gonna be HOT!  As great as the ice water dripping from your finish line towel will feel, please DO NOT return to the finish aid tent to re-dip your towel once it starts to dry. (Think about that for a minute… ewww!)

The above information is only that which is unique to this event.

Please click here to review other general but important details and AMP Company Policies.