Westminster, CO | Saturday, July 11, 2026Registration OpenFun / Novelty
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.
Available Distances
Awards & Prizes
Participant Giveaway
13.1 Miles: T-Shirt
10K: T-Shirt
5K: T-Shirt
Registration & Pricing
Distance
Price
Opens
Closes
13.1 Miles
$65.00
Jul 6
Jan 12
$70.00
Jan 12
Apr 12
$80.00
Apr 12
Jun 28
$85.00
Jun 28
Jul 11
10K
$45.00
Jul 6
Jan 12
$50.00
Jan 12
Apr 12
$60.00
Apr 12
Past Results
10K
Year
Finishers
Median Time
Fastest Time
2015
85
1:05:25
35:49
2014
93
1:08:57
41:09
5K
Year
Finishers
Median Time
Fastest Time
2015
158
35:22
19:25
2014
153
36:01
19:04
Half Marathon
Year
Finishers
Interested in this race?
Jun 28
$65.00
Jun 28
Jul 11
5K
$35.00
Jul 6
Jan 12
$40.00
Jan 12
Apr 12
$50.00
Apr 12
Jun 28
$55.00
Jun 28
Jul 11
Schedule
Thursday, July 11 4:30p-6:30p Early packet pick-up Location: Road Runner Sports, 10442 Town Center Dr., Westminster click here for directions Road Runner Sports will donate $1 to Do Over Dogs for every packet picked up here! Saturday, July 13 6:15a Packet pick-up open 6:50a Half marathon pick-up/registration close 7:00a Half marathon start 7:20a 10K pick-up/registration close 7:30a 10K start/5K pick-up and registration close 7:40a 5K start 8:15a 5K awards ceremony 8:45a 10K/half overall awards c