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Firefly Race Series

Friday, June 13 and Saturday, June 14 Lisle, IL 60532 US

Virtual Participation

Runners can participate in the Firefly Race Series virtually by completing the race distances at locations and on dates of their choosing. Both the 3K and 10K courses at the Arboretum are open to virtual participants from Friday, June 6 through Friday, June 13. Virtual runners will receive free admission to the Arboretum during this period to complete their distances. Virtual participants will record their times via the Arboretum’s RunSignUp platform. Virtual participants will not be eligible for awards.

Registration for virtual races ends Tuesday, May 27, at 11:59 p.m. All virtual participants will receive their race packets and apparel via mail, free of charge.

Virtual Firefly 3K and 10K Challenge

Register for both the Virtual Firefly 3K and the Virtual Firefly 10K to save on registration—and compete in our first-ever endurance series!
Take on the Firefly Challenge to enjoy the following benefits.

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