Thin Mint Sprint 2026

Join us for the 22nd Annual Thin Mint Sprint!! 

Get ready to lace up your running shoes because the Fox River Grove Memorial Library Running Club is back with an exhilarating in-person race! This year, we're bringing back the timed 5K fun run/walk along the stunning Fox River, as well as a 1-mile walk/run option. Mark your calendars for Saturday, September 12, and head to Lions Park for an epic day of racing and community celebration. And don't forget about the post-race party – it's going to be a blast! This is an event you won't want to miss, so join us for an unforgettable day of fitness, fun, and togetherness!

Join us in supporting GSNI's financial assistance programs. We're on a mission to ensure that every girl has the opportunity to experience the amazing world of Girl Scouts, no matter what challenges they face. From membership fees to uniforms, books, and even international adventures, we're dedicated to making the Girl Scout journey accessible to all. 

Registration Details

Your registration fee covers everything you need for the Thin Mint Sprint: a T-shirt, a high-tech chipped timing bib, a shiny medal, a trendy patch, a whole box of official Girl Scout Thin Mint Cookies, and even more awesome race swag items. Get ready to run and enjoy all these fantastic goodies!

$40 Early-Bird Registration ~ March 31 - August 15, 2026, at 11:59 p.m.

$45 Regular Registration ~ August 16 – September 11, 2026, at 11:59 p.m.
$50 Race Day ~ September 12, 2026

Race packet pick-up will occur during race check-in on September 12th. 

Virtual runners will be contacted in regard to packet mailing. 

Check-in on race day opens at 7:45 a.m.

Race begins at 8:30 a.m. sharp!
After-party immediately following until 12:00 p.m.

FOR PARKING, PLEASE USE THIS ADDRESS FOR GPS LOCATION: 400 Lincoln Ave, Fox River Grove, IL 60021