Events 2018-09-18T19:43:27+00:00
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Special Events

Cosley Zoo hosts a variety of events every year, including the popular Run for the Animals in June and The Festival of Lights & Christmas Tree Sale in December.

Cosley Classic Aug 2017 event photo taken by Larry Kmiecik

Pumpkin Fest

October 1 – 31

Taking in the beautiful fall colors at Cosley Zoo is a must do! See the animals in the crisp fall air, listen to the squeals of excitement from the children conquering the straw pyramid and take in the thousands of pumpkins scattered on the zoo’s lawn. Children’s rides are also available.

Apples, gourds, pumpkins, cider, cornstalks, and various sizes of straw bales are available to purchase. Check out the fall merchandise in the Wild Side Gift Shop, too.

  • Regular admission rates apply
  • Fee for rides

Sponsored by

Bear Paddle Logo

Med Express Logo

Cosley Classic Aug 2017 event photo taken by Larry Kmiecik


Don’t miss this fall festival full of Halloween fun!

Friday, October 26 | 5:30-7P – SOLD OUT and 7-8:30P

Come dressed in costume to enjoy loads of activities. Take a stroll through our “not so scary” straw maze and around the spooky pond path, meet live animals, carve or decorate a pumpkin, play games, enjoy refreshments and make crafts. Stop at various stations along the Trick or Treat Trek to collect your supply of holiday goodies. All ages are welcome, most activities are geared for ages 2 and up.

Space is limited, so register early. Non-refundable payment due at the time of registration.

  • Pre-registration is required
  • Fees -$12 ages 3-14; $6 ages 15-Adult; free ages 2 and under
  • Cosley Zoo member fees* – $9 ages 3-14; $5 ages 15-adult; free ages 2 and under

*Corresponding to Membership Plan Benefits


Cosley Zoo members, please call the zoo at 630-665-5534 to sign up and receive your member discount.

Sponsored by

Restoration Dental

Superstar Karate logo

Safe + Fair logo

Cosley Classic Aug 2017 event photo taken by Larry Kmiecik

Festival of Lights and Tree Sales

November 23 – December 30 | Cosley Zoo

A winter visit to Cosley Zoo has become a family tradition for many. Make it one of yours! Cosley Zoo is transformed into a winter wonderland with thousands of twinkling lights, an amazing selection of Christmas trees for you to purchase, hot chocolate, and holiday gifts. The Festival of Lights and Tree Sales begin the day after Thanksgiving (11/23/18) and continue through December 30.

The zoo is open 9A-9P daily; lights come on at 3P.

  • Zoo Admissions is free during the Festival of Lights and Tree Sales. Donations are greatly appreciated.
  • Cosley Zoo is closed on Thanksgiving, Christmas, and New Year’s Day
  • Cosley Zoo is open 9A-Noon on Christmas Eve and New Year’s Eve
Cosley Classic Aug 2017 event photo taken by Larry Kmiecik

Christmas Tree Lane

November 25 – December 1 | Cosley Zoo

Gather your scout group, friends, coworkers or family members to help decorate Cosley Zoo for the holidays! We provide a lit five foot tree; you provide wildlife-friendly ornaments and imagination. Trees are displayed through December.

Payment due upon reservation.

  • $50 per tree
  • Limit 40 trees
  • Tree decorating to take place November 25-December 1
Cosley Classic Aug 2017 event photo taken by Larry Kmiecik

Santa’s Craft Corner

Saturday Nov. 24, Dec. 1 & 8 | 10A – 2P | Cosley Zoo

Skip the long line at the mall and visit Santa at the zoo. While you are here, make a craft or two and tour the zoo before you go. Admission includes crafts, refreshments, and of course, a visit with the man in red himself. Santa’s Craft Corner is held in the Kiebler Room, located on the second floor of the large barn.

  • No registration required
  • $5 per family
  • $3 for printed photo with Santa

Cosley Zoo Run for the Animals 5K/10K and 1/2-Mile Race Event

June 1, 2019 | 5K/10K Race Start: 7:30A | Downtown Wheaton

Support Cosley Zoo by participating in one of the Chicago suburbs’ largest and most popular 5K/10K runs!

2018 Race Results
CARA logo is linked to website (opens in new window)

Course Information

Race Map (PDF)
The course is USATF certified (#IL14055JW)

The Cosley Zoo Run for the Animals is certified by the Chicago Area Runner’s Association.
The 10K course is part of the Chicago Area Runner’s Association Circuit Series.

Run for the Animals slideshow opens on (link opens in new window)
Run for the Animals Slideshow

Interested in sponsoring an event?

Please contact:

Margie Wilhelmi
Director of Marketing

Benefiting Cosley Zoo – Proceeds from all events support Cosley Zoo and its activities, including educational programs and wildlife conservation.