past events
view events in progress
![Coalition of North American Zoos and Aquariums logo](/system/events/org_logos/000/000/098/original/ecochallenge_columbus_zoo_logos.png?1655136808)
Plastic Free Ecochallenge 2022
July 1 - July 31, 2022
![EcoChallenge.org logo](/system/events/org_logos/000/000/034/original/EcoChallenge_Logo_with_White_Background_for_Event.png?1550879198)
Drawdown EcoChallenge
April 3 - April 24, 2019
![Ecochallenge.org logo](/system/events/org_logos/000/000/044/original/Ecochallenge_wordmark_med_blue.png?1566232741)
2019 People's Ecochallenge
October 2 - October 23, 2019
![Ecochallenge.org logo](/system/events/org_logos/000/000/029/original/EcoChallenge_Logo_with_White_Background_for_Event.png?1550879362)
2018 People's Ecochallenge
October 3 - October 24, 2018
![Ecochallenge.org logo](/system/events/org_logos/000/000/148/original/Ecochallenge_wordmark_med_blue.png?1690998583)
Campus Ecochallenge
Ongoing Event
![Ecochallenge.org logo](/system/events/org_logos/000/000/014/original/EcoChallenge_Logo_with_White_Background.png?1550191146)
2017 People's Ecochallenge
October 11 - October 25, 2017
![Ecochallenge.org logo](/system/events/org_logos/000/000/136/original/ecochallenge-x-drawdown-logo.png?1691100595)
Drawdown Ecochallenge
October 1 - October 31, 2023
![Northwest Earth Institute logo](/system/events/org_logos/000/000/001/original/NWEI_Color_BrightBlue_LR.jpg?1480314921)
EcoChallenge
October 14 - October 28, 2016
![Ecochallenge.org logo](/system/events/org_logos/000/000/068/original/Ecochallenge_wordmark_med_blue.png?1597253321)
2020 People's Ecochallenge
October 7 - October 28, 2020
![Ecochallenge.org logo](/system/events/org_logos/000/000/119/original/Ecochallenge_wordmark_med_blue.png?1671143903)
Earth Month Ecochallenge 2023: Sustainable Development Goals
April 1 - April 30, 2023
![Ecochallenge.org logo](/system/events/org_logos/000/000/056/original/earth_day_ecochallenge-wordmark.png?1584649794)
Earth Day Ecochallenge
April 1 - April 30, 2020
![Sustainable Pittsburgh logo](/system/events/org_logos/000/000/025/original/I_Am_SP__CIRCLE_drop-out_background.png?1547058875)
2019 Spring Event
February 27 - March 20, 2019
![Ecochallenge.org logo](/system/events/org_logos/000/000/155/original/Ecochallenge_wordmark_med_blue.png?1706914240)
Earth Month Ecochallenge 2024: Conservation
April 1 - April 30, 2024
![Climate Conversations NCW logo](/system/events/org_logos/000/000/007/original/Squarish-Logo-Color-Big-transparentBG.png?1490033255)
NCW EcoChallenge
May 13 - May 26, 2017
![Puget Sound Conservation Districts logo](/system/events/org_logos/000/000/070/original/betterGroundDoubleLayer-01.png?1599783164)
Orca Recovery Day
October 5 - November 5, 2020
![Ecochallenge.org logo](/system/events/org_logos/000/000/082/original/Ecochallenge_wordmark_med_blue.png?1628790002)
The People's Ecochallenge
October 6 - October 27, 2021
![Ecochallenge.org logo](/system/events/org_logos/000/000/076/original/Ecochallenge_wordmark_med_blue.png?1613680070)
Earth Month Ecochallenge: Drawdown
April 1 - April 30, 2021
![Ecochallenge.org logo](/system/events/org_logos/000/000/030/original/Ecochallenge_wordmark_med_blue.png?1566232931)
Campus Ecochallenge
Ongoing Event
![Ecochallenge.org logo](/system/events/org_logos/000/000/048/original/drawdown_book_coverNYT.jpg?1566322467)
Drawdown Ecochallenge
Ongoing Event
![Portland Trail Blazers logo](/system/events/org_logos/000/000/035/original/18LiveGreenerLockup.png?1551225058)
Live Greener Challenge
April 1 - April 30, 2019
![Ecochallenge.org logo](/system/events/org_logos/000/000/093/original/Ecochallenge_wordmark_med_blue.png?1645143803)
Earth Month Ecochallenge 2022: Sustainable Development Goals
April 1 - April 30, 2022
![Ecochallenge.org logo](/system/events/org_logos/000/000/061/original/Partner_Logos.png?1584122994)
Youth Climate Ecochallenge: A Drawdown Solutions Race
April 15 - May 15, 2020
![Ecochallenge.org logo](/system/events/org_logos/000/000/005/original/NWEI_Color_BrightBlue.png?1484844276)
Campus EcoChallenge 2016-17
January 17 - June 30, 2017
![Ecochallenge.org logo](/system/events/org_logos/000/000/013/original/EcoChallenge_Logo_with_White_Background.png?1550191239)
Campus EcoChallenge
July 1, 2017 - August 15, 2018
![Ecochallenge.org and Project Drawdown logo](/system/events/org_logos/000/000/020/original/drawdown_book_coverNYT.jpg?1518628699)
Drawdown EcoChallenge
April 4 - April 25, 2018
![Coalition of North American Zoos and Aquariums logo](/system/events/org_logos/000/000/040/original/plastic-free-ecochallenge-01.png?1556043509)
Plastic Free Ecochallenge 2019
July 1 - July 31, 2019
![Calgary Zoo & Columbus Zoo and Aquarium logo](/system/events/org_logos/000/000/027/original/CalgaryColumbusLogo.png?1527018273)
Plastic Free EcoChallenge 2018
July 1 - July 31, 2018