Anticipation is building as the Flossmoor community prepares for the sixth annual Hidden Gem Half Marathon on Saturday, Sept. 6.
The race starts at 7:30 a.m. in front of Infant Jesus of Prague School and is expected to end around 11:30 a.m. with the finish line on Sterling Avenue.
Tom Dobrez, president of Flossmoor’s Future and race coordinator, said it’s been an exciting time with big changes. This year’s race has 1,200 runners up from the previous 1,000 contestants. The race was a sell-out in six days.
“It was primarily due to demand,” Dobrez said. “Just the need to be able to accommodate everybody as the race continues to grow in popularity.”
Even with the new limit for runners, there are still a number of people on the waitlist, Dobrez said. Organizers wanted to make sure to maintain a good quality race and a good experience for the runners.
The race has gotten more national recognition from running media.
Runner’s World listed Hidden Gem in its article “10 Races You’ve Never Heard Of.” Hidden Gem was listed in fourth place by the Outside Network in its article on the top 13 half-marathons in the United States good for a personal record.
Looking at the map for this year, Dobrez said the two neighborhoods impacted by the route changes are Heather Hill and Flossmoor Park.
“We used to go through the entire neighborhood, but that presented some traffic challenges for the residents,” Dobrez said. “We responded to that by essentially cutting the run through Heather Hill in half.”
Dobrez said he recommends residents stay in their communities and enjoy the race.
With the reroutes on the Flossmoor Park section, Dobrez said the runners will cross a couple extra streets picking up the route on Flossmoor Hills Road and the intersection of Evans Road, and near the Flossmoor Community Church, where volunteers will have a water station.
Runners for the Hidden Gem have come from everywhere, with one coming from Sweden. This year’s race is attracting many of the top women runners across the country, including a runner who finished in the top 10 in the 2024 Chicago Marathon, Dobrez said.
This year, on Sept. 5, the Friday before the race, registered runners will be able to pick up their bibs and gear, and they will be offered a pasta dinner with conversation featuring Carey Pinkowski, the CEO of the Bank of America Chicago Marathon, and Michael Lucchese, founder and CEO of Pipe Creek Consulting.
As for community collaborations, the Heather Hill Civic Association, the Flossmoor Community Church and the Church of St. John the Evangelist will be running water stations, Dobrez said.
Flossmoor Baseball and Softball members are volunteers on the day of the race and will be making egg sandwiches for after the race.
Girl Scouts will be handing out medals as racers cross the finish line; and the H-F High School spirit teams, Vikings marching band and National Honors Society members will be cheering and volunteering.
“It’s truly a community event. We have dozens of organizations… [around] 300 volunteers,” Dobrez said. “Just about every major group in Flossmoor is represented on race day somewhere on our course.”
The neighborhoods are known for going all out for their support during the race with themes for runners. Dobrez said Flossmoor Park plans to do rainbows and decades with themes from the 1960s, 1970s and 1980s.
The Village of Flossmoor is also hosting Kegs and Eggs for the second year in a row in the downtown area from 10 a.m. to 1 p.m. Village Community Engagement Manager Stephanie Wright said it’s a traditional post-race party and a great way for the village to end the race in celebration.
Wright said vendors will be available for people to buy food as early as 7 a.m. the morning of the race. Flossmoor DJ Matt Kuhnen will provide musical accompaniment.
Wright mentioned the streetscape project construction in the downtown area should be wrapping up around the time of the race, making it a good time for everyone to patronize the local businesses.
Designated Detours:
- 183rd Street
- Dixie Highway
- Crawford Avenue / Pulaski Road
- Vollmer Road
- Main Road Closures:
- Kedzie Avenue (Flossmoor Road to 193rd) 7 to 9:30 a.m.
- Governors Highway (Heather Road to Flossmoor Road) 7 to 9:45 a.m.
- Flossmoor Road (West of Governors Highway) 7 to 9:45 a.m.
- Flossmoor Road (East of Governors Highway) 7 a.m. to noon
Neighborhood Closures:
There will be a period of “soft” closures and then “hard” closures when runners enter each neighborhood. These hard closures will vary by neighborhood and are unlikely to last longer than one hour in most neighborhoods.
- Baythorne — 7:30 to 8:15 a.m.
- Ballantrae — 7:30 to 9 a.m.
- Flossmoor Hills — 7:30 to 9:15 a.m.
- Braemar Rd — 7:45 to 9:45 a.m.
- Heather Hill — 7:30 to 9:30 a.m.
- Flossmoor Estates — 8 to 10:45 a.m.
- Flossmoor Park — 8:15 to 11:15 a.m.
- Old Flossmoor — 8:30 to 11:30 a.m.
The Village of Flossmoor Police have also agreed to waive the no overnight parking ban. Drivers are encouraged to park a car near your home and off the route to get out in the morning.
Flossmoor Road Closure:
Flossmoor Road between Western Avenue and Governors Highway will experience slightly longer hard closures — 7 a.m to noon.
Western Avenue Closure:
Western Avenue will be closed in both directions from Vardon Lane to Flossmoor Road from 7 to 11:15 a.m. — Northbound traffic on Western Avenue will be allowed to turn right (east) at Flossmoor Road.
Garbage Pick-up:
If your garbage is usually picked up on Friday, it will still be picked up on Friday, Sept. 5, despite the Labor Day holiday week, per both Homewood Disposal and Republic Disposal.
For more information, visit www.hiddengemhalf.com.
Related stories:
- Heather Hill group prepares for the Hidden Gem Half Marathon, discusses community action (June 19, 2025).
- Hidden Gem 2024: Co-founders get to run; volunteers serve music, chalk art, chocolate milk (Sept. 18, 2024).
- Hidden Gem 2024: Solemates: Couple who met at 2022 race wed just one week after running this year’s half marathon (Sept. 16, 2024).
- Hidden Gem 2024: Broadway comes to Flossmoor (Sept. 10, 2024).
- Hidden Gem 2024: New men’s division record set in fifth annual Hidden Gem Half Marathon (Sept. 7, 2024).
- Hidden Gem 2024: The Gem gets Heather Hill buzzing with excitement (Sept. 7, 2024).
- Hidden Gem 2024: Mutual admiration from runners and volunteers in Flossmoor Hills
- (Sept. 7, 2024).
- Hidden Gem 2024: A finish line tradition: Yellowjackets provide levity, entertainment at the end of the race (Sept. 4, 2024).
- Hidden Gem 2024: Runner warming up for intense marathon challenge (Sept. 2, 2024).
- 5th Hidden Gem race returns with improved traffic plan (Aug. 30, 2024).
- New celebration to follow Hidden Gem in Flossmoor Sept. 7 (Aug. 27, 2024).
- Organizers recruit next generation of Hidden Gem leaders (Feb. 24, 2024).
- Hidden Gem again named Race of the Year; organizers seek next generation of leaders (Jan. 31, 2024).
- The Gem 2023: Flossmoor’s Burns Avenue shines with ‘Go, Team, Go’ spirit at Hidden Gem Half Marathon (Sept. 15, 2023).
- The Gem 2023: Ballantrae neighborhood adds sparkle to Flossmoor’s Hidden Gem Half Marathon (Sept. 13, 2023).
- The Gem 2023: Braeburn, Brassie residents offer holiday joy to Gem runners (Sept. 11, 2023).
- The Gem 2023: First timers, former college runners take top honors in Hidden Gem (Sept. 9, 2023).
- Flossmoor’s Hidden Gem Half Marathon gears up for its 4th edition (Aug. 20, 2023).
- Flossmoor unites for fourth annual Bike the Gem community ride (June 6, 2023).
- Hidden Gem named CARA race of the year (Feb. 26, 2023).
- Flossmoor cheer teams again make the Hidden Gem special — for runners and themselves (Sept. 13, 2022).
- Bareikis, Medina push through to win Hidden Gem (Sept. 10, 2022).
- Hidden Gem to return Sept. 10 with familiar route highlighting Flossmoor’s neighborhoods (Aug. 19, 2022).
- First responders, soldier honored at Hidden Gem on Sept. 11 (Sept. 22, 2021).
- Second Hidden Gem Half Marathon sees more runners, two records fall (Sept. 12, 2021).
- Hidden Gem runner will be trying for a world record (Sept. 10, 2021).
- Hidden Gem organizers address route, closures, safety ahead of Sept. 11 race in Flossmoor (Aug. 4, 2021).
- Hidden Gem adding participation cap this year; early registration deal ends this weekend (July 17, 2021).
- Hidden Gem Half Marathon sets Sept. 11 as return date, but organizers playing it safe (March 13, 2021).
- Local runners club covers the Gem route in tribute to canceled race (Sept. 15, 2020).
- 2020 Hidden Gem Half Marathon canceled, smaller events to come (June 16, 2020).
- Hidden Gem race achieves CARA circuit status in 2nd year (Jan. 24, 2020).
- Hidden Gem Half Marathon runners reflect on Flossmoor race (Sept. 10, 2019).
- Scenes from the Hidden Gem Half Marathon (Sept. 8, 2019).
- Many Flossmoor streets will be closed during Hidden Gem race on Saturday (Sept. 1, 2019).
- Local runners club eager to compete in Hidden Gem (Sept. 1, 2019).
- Flossmoor’s ‘hidden gems’ given chance to shine for Sept. 7 race (Sept. 1, 2019).
- ‘Bike the Gem’ attracts nearly 200 to preview half marathon course (July 20, 2019).
- Bike it or watch it: Two ways to learn Hidden Gem race route (June 24, 20219).



