84 Upcoming Races Near Lake Forest, IL in September, 2026

Diplo's Run Club Chicago

Chicago, IL

Saturday, October 3rd, 2026

Featured

Code:FTR10

View details for race Diplo's Run Club Chicago

Spartan Sprint 5K & Family Fun Run

Elgin, IL

Sunday, September 20th, 2026

View details for race Spartan Sprint 5K & Family Fun Run

5K Fun Run/Walk

Glenview, IL

Sunday, September 20th, 2026

View details for race 5K Fun Run/Walk

5K Fun Run and Family Walk

Glenview, IL

Sunday, September 20th, 2026

View details for race 5K Fun Run and Family Walk

Organize a race? Add it free — over 100,000 runners use Find The Run every month.

Add it free Feature it

D67 Dash 5K Run/Walk

Morton Grove, IL

Sunday, September 20th, 2026

View details for race D67 Dash 5K Run/Walk

Healthy Kids Running Series Fall 2026 - Liberty...

Libertyville, IL

Sunday, September 20th, 2026

View details for race Healthy Kids Running Series Fall 2026 - Libertyville, IL

Race to Zero

Libertyville, IL

Sunday, September 20th, 2026

1 Mile

View details for race Race to Zero

Willow House Walk and 5K Run For Hope

Libertyville, IL

Sunday, September 20th, 2026

View details for race Willow House Walk and 5K Run For Hope

Chicagoland Be A Hero #LightUpMBC Fun Run

Plainfield, IL

Sunday, September 20th, 2026

View details for race Chicagoland Be A Hero #LightUpMBC Fun Run

2026 D54 Education Foundation Run to Read

Schaumburg, IL

Sunday, September 20th, 2026

1 Mile

View details for race 2026 D54 Education Foundation Run to Read

Headless Horseman Hussle

Sleepy Hollow, IL

Sunday, September 20th, 2026

View details for race Headless Horseman Hussle

Beignet 5K

Geneva, IL

Thursday, September 24th, 2026

View details for race Beignet 5K

Bloomingdale Trail 5K

Chicago, IL

Saturday, September 26th, 2026

Trail

View details for race Bloomingdale Trail 5K

Northbrook District 27 PTA 5K, 1 Mile and Kid's...

Northbrook, IL

Saturday, September 26th, 2026

1 Mile

View details for race Northbrook District 27 PTA 5K, 1 Mile and Kid's Dash

I’m Here for the Food (Pantry) 5k

Elk Grove Village, IL

Saturday, September 26th, 2026

View details for race I’m Here for the Food (Pantry) 5k

Lawndale 5K

Chicago, IL

Saturday, September 26th, 2026

View details for race Lawndale 5K

Moraine Hills Run for the Hills

McHenry, IL

Saturday, September 26th, 2026

Half

10K

Trail

View details for race Moraine Hills Run for the Hills

The Single & Mingle 5K at the VFW

Warrenville, IL

Saturday, September 26th, 2026

View details for race The Single & Mingle 5K at the VFW

1st Annual APRCC Coqui 5K Run/Walk

Aurora, IL

Saturday, September 26th, 2026

View details for race 1st Annual APRCC Coqui 5K Run/Walk

St. Jude Walk-Chicago

Brookfield, IL

Saturday, September 26th, 2026

View details for race St. Jude Walk-Chicago

Lake County Suicide Prevention Task Force 14th ...

Grayslake, IL

Saturday, September 26th, 2026

View details for race Lake County Suicide Prevention Task Force 14th Annual 5K Walk/Run for Awareness and Suicide Prevention

Our Fallen Hero 5K Run/Walk in Memory of PFC Aa...

Mokena, IL

Saturday, September 26th, 2026

View details for race Our Fallen Hero 5K Run/Walk in Memory of PFC Aaron Toppen

Race to Cure Sarcoma Chicago

Chicago, IL

Saturday, September 26th, 2026

View details for race Race to Cure Sarcoma Chicago

District 112 FUNd Run and Family Walk

Highland Park, IL

Saturday, September 26th, 2026

1 Mile

Trail

View details for race District 112 FUNd Run and Family Walk

Soph's Legacy Loop - Reach for the Sky!

Lockport, IL

Sunday, September 27th, 2026

1 Mile

View details for race Soph's Legacy Loop - Reach for the Sky!

The "Oui" Run 5K

Chicago, IL

Sunday, September 27th, 2026

View details for race The "Oui" Run 5K

F3 Naperville 5K Run & Walk

Warrenville, IL

Sunday, September 27th, 2026

View details for race F3 Naperville 5K Run & Walk

4th Annual Ted's Run 5k

Racine, WI

Sunday, September 27th, 2026

View details for race 4th Annual Ted's Run 5k

Inside Out Club Fall Family 5K

Wheaton, IL

Sunday, September 27th, 2026

View details for race Inside Out Club Fall Family 5K

Healthy Kids Running Series Fall 2026 - La Gran...

Countryside, IL

Sunday, September 27th, 2026

View details for race Healthy Kids Running Series Fall 2026 - La Grange/Countryside, IL

Lester Fun Run 2025

Downers Grove, IL

Sunday, September 27th, 2026

1 Mile

View details for race Lester Fun Run 2025

Plainfield Harvest Run 5k/10k & Kids Miler

Plainfield, IL

Sunday, September 27th, 2026

1 Mile

10K

View details for race Plainfield Harvest Run 5k/10k & Kids Miler

Golden Harvest Half Marathon & 5k/10k - Greater...

Greater Chicago, IL

Sunday, September 27th, 2026

1 Mile

10K

View details for race Golden Harvest Half Marathon & 5k/10k - Greater Chicago

2026 Chi-Care 5K Run/Walk

Chicago, IL

Sunday, September 27th, 2026

View details for race 2026 Chi-Care 5K Run/Walk

Northwest CASA Pumpkin Dash 5k / 10k

Elk Grove Village, IL

Sunday, September 27th, 2026

10K

View details for race Northwest CASA Pumpkin Dash 5k / 10k

Prev 1

Explore more in Lake Forest, IL

Jump straight to races by distance, month, or type.

Distance

5K 10K Half Marathon Marathon

Month

July August September

Race type

Trail Boston Qualifiers Fast Courses

Run clubs

Run clubs in Lake Forest

Nearby

Libertyville Long Grove Wheeling Grayslake Arlington Heights Palatine All Illinois races