Ultramarathons in Illinois
27 upcoming Ultramarathon races in Illinois for 2026 and beyond — with dates, locations, and registration links.
- Plainfield American Legion 5K Charity RunSat, Jun 13, 2026 · Plainfield, IL5K50 Miles
- Tour De Charleston - 10th AnnualSat, Jun 13, 2026 · Charleston, IL20K40.2K50 Miles
- Trailnet I Scream for Ice Cream RideSun, Jun 28, 2026 · Edwardsville, IL10 Miles38.6K54.7K82.1K
- 2026 CAMBr Chicagoland Race Series Powered by SRAMSun, Jul 26, 2026 · Carpentersville-Hoffman Estates-Willow Springs, IL5K8K9.7K10 Miles20 Miles24.1K1K4.5K6.4K2.4K12.9K19.3K48.3K
- Heatwave Half Marathon - Greater ChicagoSun, Aug 2, 2026 · Elk Grove Village, IL50 Miles1 Mile5K10KHalf Marathon
- The Next Loop 40M/50M Challenge | Deer Grove EastSat, Aug 8, 2026 · Palatine, IL50 Miles
- The Next Loop Endurance Series | Deer Grove EastSat, Aug 8, 2026 · Palatine, IL50K
- Highlander Assault Obstacle RaceSat, Aug 15, 2026 · Pingree Grove, IL5K15K50K3K
- KMC Sage City ClassicSat, Aug 22, 2026 · Monticello, IL100K50K
- Comlara 12 Hour Sunrise-Sunset, 6 Hour, 3 Hour and Hour of Power Trail RunSat, Aug 22, 2026 · Hudson, IL82.1KMarathonHalf Marathon6.8K
- Mud Sweat and Gears MTB RaceSat, Aug 29, 2026 · Hudson, IL11.3K24.1K50K1 Mile
- The Next Loop 40M/50M Challenge | Half Day Forest PreserveSat, Aug 29, 2026 · Vernon Hills, IL50 Miles
- Summer Sizzler- Greater ChicagoSun, Aug 30, 2026 · Aurora, IL5K10K50 Miles1 Mile
- Hope Echoes on the River Charity Bike RideSun, Aug 30, 2026 · Geneva, IL10 Miles56.3K104.6K
- Warrior CrucibleFri, Sep 4, 2026 · Loves Park, IL5K48.3K
- The Ultimate SUCKFri, Sep 4, 2026 · Cuba, IL50 Miles40.2K10 Miles
- Hobo Trail Runs 10k-25k-50kFri, Sep 11, 2026 · Rockford, IL85K60K10K25K50K
- HMFA’s Tour de Heartland FundraiserSat, Sep 12, 2026 · Greenview, IL17.7K27.4K50 Miles
- Capital City CenturySat, Sep 19, 2026 · Sherman, IL100 Miles106.2K64.4K20 Miles
- Richmond RampageSun, Sep 20, 2026 · Richmond, IL50 Miles50K
- Golden Harvest Half Marathon & 5k/10k - Greater ChicagoSun, Sep 27, 2026 · Greater Chicago, IL50 Miles1 Mile5K10KHalf Marathon
- Sweet Ride | Bike • Run • WalkSat, Oct 3, 2026 · Willow Springs, IL5K40K65K
- Site M: RedactedSat, Oct 3, 2026 · Chandlerville, IL50 Miles48.3K
- Spooky Sprint - Greater ChicagoSun, Oct 25, 2026 · Shorewood, IL50 Miles1 Mile5K10KHalf Marathon
- The Forge Trail Run FestivalSat, Nov 14, 2026 · Lemont, IL10KHalf Marathon30K59.9K
- Turkey Trails - Greater ChicagoSat, Nov 28, 2026 · Shorewood, IL50 Miles1 Mile5K10KHalf Marathon
- Candy Cane Course- Greater ChicagoSat, Dec 12, 2026 · Elk Grove Village, IL50 Miles1 Mile5K10K15K