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The new Firefly Race Series features both a 3K run and walk on Friday, May 3, and a 10K race on Saturday, May 4. There is also an option to run one or both races virtually at the Arboretum or from a location of your choice. Sign up at https://bit.ly/3uVsOCn.Day one kicks off with the new Firefly 3K at 7:30 p.m. on Friday, May 3, offering a unique after-hours experience at the Arboretum with stunning sunset views and a fun post-race party featuring glow lights and a DJ. The Firefly 3K course is designed for runners and walkers of all levels.
Gear up for day two beginning at 8 a.m. on Saturday with the invigorating Firefly 10K through the scenic landscapes of the Arboretum’s East Side, following the previous Champion of Trees 10K route.
Runners may participate in the race series virtually by running one or both race distances at a location of their choosing. Virtual participants will have access to the 3K and 10K courses at the Arboretum from Friday, April 26, to Friday, May 3.
Register for just one event, or bundle the Firefly 3K and 10K to save on registration to compete in the Arboretum's first-ever endurance series for a fun weekend of adventure.
Race Series Schedule
Firefly 3K
Friday, May 3, 7:30 p.m. shotgun start
Firefly 10K
Saturday, May 4, 8:00 a.m. shotgun start
Registration Details
Registration must be completed online through RunSignUp. Registration opens Wednesday, Feb. 28.
Participate in just one race, or register for both the Firefly 3K and 10K runs by Tuesday, April 23, to take on a combined challenge and receive a discount on registration. Availability is limited, so register early to reserve your spot today.
Arboretum members will receive their $5 member discount by entering their membership ID number during the online registration process.
Firefly Race Series
Firefly 3K: $50 member, $55 guest
Firefly 10K: $60 member, $65 guest
Firefly 3K and 10K Challenge: $95 member, $105 guest ($15 discount)
Virtual Participation
Firefly 3K: $40 member, $45 guest
Firefly 10K: $50 member, $55 guest
Firefly 3K and 10K Challenge: $80 member, $90 ($10 discount)
Your registration helps support the Arboretum’s vision of a greener, healthier, and more beautiful world where people and trees thrive together. Sign up at https://bit.ly/3uVsOCn.
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Event Venue & Nearby Stays
4100 IL-53, Lisle, IL, United States, Illinois 60532
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