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September 7, 2024 Aurora, CO 80016 US
Countdown to Race Day


Early Bird Registration!

5K Timed Trail Run

$45 09/07 8:00AM MDT - 8:30AM MDT Registration ends September 7, 2024 at 8:00am MDT
Dogs welcome!

Family 5K Trail Walk

$45 09/07 8:10AM MDT - 9:00AM MDT Registration ends September 7, 2024 at 8:00am MDT
Open to ages 5-10

Kids 1-mile Run/Walk

$20 09/07 8:45AM MDT - 9:15AM MDT Registration ends September 7, 2024 at 8:00am MDT
Open to ages 5 - 10.
Sleep in but still participate!


$45 Open from July 15th to September 15st

Race Website

Additional race information can be found at


Arapahoe County Fairgrounds
25690 E. Quincy Avenue
Aurora, CO US 80016


Join us for a fun filled day focused on physical and mental wellness, family fun and our furry friends!

RexRun for PAWSitivity 2024 opens at 7:00 am so you can visit with the doggies and get an early peek in the Vendor Marketplace! Our family 5K event kicks off at 7:50am with the singing of our National Anthem. The 5K trail run begins at 8am and is followed at 8:10am with the 5K walk (with your dog!) and the kid's run at 8:45am! Afterwards, treat yourself to a tasty pancake breakfast at the Flippin' Flapjacks food truck! Throughout the day, we will feature therapy and patrol K-9 training demonstrations, and the ASCO Mounted Patrol will come galloping in! Be sure to catch our colorful dog costume contest (complete with a prize basket brimming with canine fun) and participate in both our silent and live auctions that are always too good to miss!


The Fitness Zone will feature bouncy houses, an obstacle course, and a selection of lawn games like cornhole and sack races for family fun. Meanwhile, children can enjoy face painting, balloon art, and, naturally, cotton candy! Don't forget to explore the Vendor Marketplace for event giveaways and to consult with specialists about your pet needs! Dogs are permitted in the inside event area provided they are well-behaved and on a 6-foot leash.


The star of our event is K-9 Rex, a two-year-old black Labrador therapy dog. He and his fellow K-9's with their handlers go to local schools to primarily offer comfort to students with special needs, many who are in crisis and are dealing with stress, anxiety and depression. 100% of all net profits from RexRun For PAWSitivity 2024 go to the law enforcement K-9's through the 501(c)3 nonprofit, Back The Blue K-9 Force, to purchase K-9's and their protective gear as well as provide funding for their medical needs. 


If you're at RexRun For PAWSitivity this year, you can't miss meeting K-9 Rex. His relatives Riley and Zeke and the newest additions to his family, Bear and Otis, will be waiting! 

Four registrations are available! 

  • 8:00 am - 5K Trail Timed Run 
  • 8:10 am - Family 5K Trail Walk (dogs welcome!)
  • 8:45 am - Kids 1-mile Trail Run/Walk
  • Virtual Run/Walk is open anytime from August 1st to September 30th

Our early bird price specials:

  • March 1st - June 30th: $45 
  • July 1st - August 30th: $50
  • September 1st - day of race: $60                                                                                                                                                                                                                                                                                                                                                                                  

Breakfast is included in each registration fee!

The Flippin' Flapjacks truck is back!! The breakfasts received rave reviews!! This delicious pancake, sausage, coffee and juice breakfast is included in all runners, walkers, and volunteer registrations. Additional meals can be purchased for $6 each on the day of the race. The truck will begin serving at 8:30am and will close at 10:30am. 

All registrants receive:

  • RexRun 2024 T-shirt
  • Race bib with timing tag (runners only)
  • A goody bag full of giveaways
  • Finishers medal 
  • Pancake breakfast

Fundraising Referral Program

When you sign up for RexRun For PAWSitivity 5K Run/Walk (Kids Walk excluded), you are eligible to earn cash refunds when your family and friends sign up! Once your registration is complete, you will receive a unique referral link via your confirmation email. Simply share the link through email or text with family and friends as well as post it on social media and watch the refunds flow in! Learn more!

Individual and team fundraising 

Becoming a fundraiser isn't mandatory, but we hope you do! We have made it easy for you to get started raising money! With our personal fundraising page, you can write your own unique message, or use the one we provide, to explain why this money is so important! Register HERE to get started!

Honorary K-9 Deputy Badge and Certificate

Do you have a loyal and honorable companion at home who dreams of being a Police Dog? Well, now they can! Right here at RexRun For PAWSitivity 2024, your K9 companions at home can become Honorary K9 Deputies like they've always dreamed, all for only $10! Sign your pup up and receive an honorary badge and commemorative personalized certificate, signed by Arapahoe County Sheriff, Tyler Brown and K9 Rex! Afterward, they will have the opportunity to be sworn in by the Sheriff for one year of honorary service. Click HERE to honor your pup!

Amazon Gift List

There are lots of ways to get involved In RexRun For PAWSitivity 2024! One fun way is to browse our Amazon Gift List for our Silent Auction basket items! Just go to and SHOP, SHOP, SHOP! We've made it so easy! This is a fun and most needed way to provide for the K-9's! 


Awards will be given to the top three male and female runners. The Award Ceremony will be held after the last runners cross the finish line.

Packet pick-up

Information to come. 

Please remember...Safety first!

All dogs must be on a 6-foot leash at all times; retractable leashes are not permitted. Owners are required to clean up after their pets, with several receptacles provided for convenience. Make sure your dog is well-behaved and does not interfere with other participants. Water bowls will be available throughout the event area. Participation with a stroller or dog is limited to the 5K walk and the children's one-mile run/walk only.


Our event will host numerous law enforcement K-9 units with their handlers. It's important to respect their space and make sure that neither children nor pets approach or attempt to touch them. Parents are responsible for preventing any potential injuries to their children or pets. Please observe and obey the rules established by law enforcement.

Rain or Shine

The event will be held rain or shine unless there are extreme weather conditions in the area at any time before or during the race. If this should occur, you will be directed to the safest area nearby by our law enforcement officers. This is a trail race. In case of a large amount of rain, the dirt trail will become unusable. Please stay alert if the weather becomes severe. 

Race Contact Info

If you have any questions about this race, click the button below.


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