Illinois · 5K

5K Races in Illinois

Every upcoming 5K in Illinois, all 368 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.

368 upcoming 5K races · 149 with finish-time stats

10K 80Half Marathon 56Marathon 5Ultra 2
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By the numbers

The Biggest and Longest-Running

The Illinois races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.

Largest field1,367 finishersDim Sum & Then Some: The Uptown 5K/10K & Kids Dashin the 5KLongest-running29th year29th Annual Firecracker 5kannual tradition

5K Races by City

Chicago 56Elk Grove Village 7Springfield 6Belleville 6Wheaton 6Shorewood 5Aurora 5Rockford 4Downers Grove 4Elgin 4Urbana 4Glen Ellyn 3Mattoon 3Oswego 3Rock Falls 3Wheeling 3Bolingbrook 3Yorkville 3Bloomington 3Lisle 3Palatine 3Normal 3Centralia 2Hudson 2

Soonest 5K Races in Illinois

368 total
Fri, Jul 31, 2026Run Mahomet Mahomet, IL3.1KHalf Marathon5KFrom $15Details Sat, Aug 1, 2026JANET R. NOBLITT MOSQUITO CHASE 5K Hutsonville, IL5KFrom $20Details Sat, Aug 1, 2026Tom Short 5K Shelbyville, IL5K1 MileFrom $25Details Sat, Aug 1, 2026Kaskaskia Blue Classic 5k 2026 Centralia, IL5K1 MileFrom $15Details Sat, Aug 1, 2026Dim Sum & Then Some: The Uptown 5K/10K & Kids Dash Chicago, IL10K5KFrom $55Details Sat, Aug 1, 20262026 Johnsonville Community Days 5K Run/Walk Johnsonville, IL5KFrom $25Details Sat, Aug 1, 2026PSRR Free 5K Run/Walk Shorewood, IL5KFreeDetails Sat, Aug 1, 2026Tiskilwa Pow Wow 5K 2026 Run/Walk Tiskilwa, IL5KFrom $30Details Sat, Aug 1, 2026College of DuPage 5k & Track Fest Glen Ellyn, IL5K400m10.25m6.3mFrom $30Details Sat, Aug 1, 2026Lake Land College 5k Mattoon, IL5KFrom $30Details Sat, Aug 1, 2026AOTK Nourish the Nations 5K Color Run/Walk Geneseo, IL5KFrom $30Register Sat, Aug 1, 2026Summer's Last Kick Oswego, IL1 Mile5KFrom $20Details

How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.

Common Questions About Running a 5K in Illinois

Which Illinois cities have the most 5K races?

Chicago (56), Elk Grove Village (7), Springfield (6), Belleville (6) lead the state for 5K races. Those give you the most dates to choose from if your schedule is tight.

When are most 5K races held in Illinois?

September is the busiest month for 5K races in Illinois, with 101 of the 368, followed by October with 81. If you are flexible on the date, that is the quickest way to narrow things down.

How much do Illinois 5K races cost?

Entry fees for 5K races here run from free to about $85, depending on the event and how early you register.

How early should I register for a 5K in Illinois?

175 of the 368 5K races in Illinois already have a price increase scheduled, so entry gets more expensive the longer you leave it. Race pricing almost always steps up as the date approaches, and signing up early is usually the cheapest option.

Are Illinois 5K races beginner-friendly?

Yes, for the most part. Across the 145 5K races in Illinois with published results, the typical median finish is around 35:03, which means half of every one of those fields came in slower than that. Recreational runners and walk-runners are the bulk of these fields, not the exception.

Are there trail 5K races in Illinois?

Yes, 18 races around Illinois get you off the pavement: 11 are trail races, and 7 mix road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.