Trick or Trot 5K

With the widening of 112th Avenue combined with the construction site for the new Active Adult Center on the corner of 112th Avenue & Colorado Boulevard, we have decided to cancel the Trick or Trot 5K for 2019. A portion of the 5K course is affected by these projects and will not be reopened until late in the fall. We hope you will join us for the 2019 WinterFest 5K taking place on Saturday, December 14 at 9 a.m. on this same course when the 112th Avenue widening project is complete!

City of Thornton

Trick or Trot 5K Run/Walk

Saturday, October 19, 2019

9 a.m. start @ Carpenter Recreation Center

11151 Colorado Boulevard

Thornton, Colorado 80233


Overview: Please join us for the Trick or Trot 5K Run/Walk to be held Saturday, October 19, 2019 at Carpenter Park and Recreation Center. Celebrate the spirit of the season with this unique event that is part of the annual Trunk or Treat celebration. Event is open to runners and walkers of all ages and ability levels. A special long sleeve tech shirt, professional chip timing and post race refreshments will make this a memorable event.


Registration: Online registration at  and walk-in registration starts Tuesday, September 3 at the Margaret W. Carpenter Recreation Center, 11151 Colorado Boulevard in Thornton (303-255-7800). Walk-ins will receive their race bib and t-shirt at the time of registration. Internet entrants may pick up their race bibs and t-shirts at the Carpenter Recreation Center on Friday, October 18, 7 a.m. - 7 p.m. or at the race start on Saturday. There is no phone in registration. Cut-off for walk-in and internet registrations is Wednesday, October 16. There will be no registration on Thursday or Friday, October 17/18. Day-of registration starts at 7:30 a.m. near the start line (entry fee goes up $5 on the day of the event). The first 400 who pre-register will receive a long sleeve tech shirt, those who register after that, may or may not receive a shirt!

Walk-in Registration September 3- October 16:Day of  Race Registration, October 19 (7:30 - 8:45 a.m.):
​$25 for ages 17 & under (age on race day)​$30 for ages 17 & under
​$30 for ages 18-59​$35 for ages 18-59
​$25 for ages 60 & older​$30 for ages 60 & older



What You Get: In addition to entry in the race, participants will get awesome post-race food and drink and our commemorative long sleeve tech shirt.

Parking: Parking will be in the main parking lot at Carpenter Recreation Center and the Tennis Court lots at 112th and Madison Street. Carpenter Recreation Center is open to the public, so we would like to keep spaces open. You may also park on the south side of Carpenter Park (108th and Colorado Boulevard).

Race Day Timeline:      8 a.m. – Race-Day Registration

                                       9 a.m. - Runners & Walkers Start

                                       10:15 a.m. - Scores Tabulated/Posted, Prize Drawing

                                       10:30 a.m. - Awards Presentation

Race Chip Timing: Race timing chips are attached to the back of your race bib. Please do not switch race bibs with anyone!

Start/Finish Line:   Lower parking lot on the west side of the recreation center  Click here for course map.

Dogs/Strollers: Well behaved dogs are welcome and must be kept on leashes (4 foot or less) at all times. Please do not block or impede the progress of other participants! Strollers are also permitted.

Bikes/Blades/Boards- For safety reasons bikes, rollerblades and skateboards are not permitted.

Age Divisions: First through third place awards are given to male and female runners in the following age categories (age on race day):

​10 and under,​11-14 year olds15-19 year olds
​20-29 year olds​30-39 year olds​40-49 year olds
​50-59 year olds​60+ year olds


Additionally, overall fastest male and female runners receive special awards. Top five female and male racewalkers will receive awards as well. Award winners must be present at the ceremony following the race (or designate someone to pick up your award for you). We will not mail awards to winners!

Results: Following the race, results will be posted online at

Weather: The race will be held barring lightning conditions or other dangerous weather. Please call (720) 977-5908 for information on cancellation or delay.

Volunteers: If you would like to volunteer to help at the event, please contact or (720) 977-5914. Volunteers will receive a free shirt.

Sponsorships: The race would not be possible without the generous sponsorship from the City of Thornton, Costco, and Bellco Credit Union.  For information on sponsorship opportunities, please contact or (720) 977-5965.


Trunk or Treat: Please join us for this unique celebration on October 19 at Carpenter Park (108th Avenue and Colorado Boulevard). Community members and businesses compete in several categories for best decorated trunks and costumes while handing out candy to young trunk or treaters. The Garden of the Ghouls is haunted by zombies, insane asylum patients, freak show entertainers and more! Boo Bayou offers a unique opportunity for younger participants to get their pictures taken with Disney Princesses and Super Hero Characters!