Illinois Ultramarathons
38 upcoming ultras across Illinois, updated nightly. Want radius search and maps? Open these in the Race Finder.
When to race: ultras in Illinois
Illinois has 38 upcoming ultras over the next 12 months. Among complete calendar months, March 2027 has the most listed races, with 6. Most are around Crystal Lake, Pekin, Vienna. The next one is McNotagain Fall Trail Runs on November 14 in Pekin.
- Nov 20264 races
- Dec 20263 races
- Jan 20274 races
- Feb 20271 race
- Mar 20276 races
- Apr 20274 races
- May 20274 races
- Jun 20271 race
- Jul 20272 races
- Aug 20272 races
- Sep 20273 races
- Oct 20274 races
November 2026
- Sat 11/14McNotagain Fall Trail RunsPekin, IL · 50 Mile · 30 Miles · 10 Mile · 3.5 Miles · Trail · register ↗
- Sat 11/14The Forge Trail Run FestivalLemont, IL · 10K · Half Marathon · 30K · 37.2 Miles · Trail · from $45 · register ↗
- Sat 11/14Tunnel HillVienna, IL · 50 Mile · 100 Mile · 100K · Marathon · from $10 · registration closed · register ↗
- Sat 11/14Tunnel Hill 100Vienna, IL · 100 Mile · 100K · 50 Mile · Marathon · register ↗
December 2026
- Sat 12/5Da Deer Run RunHudson, IL · 8K · 4K · 3 Hour · from $15 · register ↗
- Sun 12/13Lokalz 50 KMPeoria, IL · 50K · register ↗
- Sat 12/19Tour de TrailsRockford, IL · 5K · 6 Miles · 9 Miles · 12 Miles · 30 Miles · Trail · from $25 · register ↗
January 2027
- Fri 1/11000 Mile Challenge - 2027 MidwestEdwardsville, IL · 100+ Mile · from $34 · registration closed · register ↗
- Sat 1/950K MASHUP SLAMCrystal Lake, IL · Ultra · 50K · register ↗
- Sat 1/9Frozen GnomeCrystal Lake, IL · 50K · 10K · register ↗
- Sat 1/16The Indy IcicleMarquette Heights, IL · 2 Hour · 8 Hour · from $30 · register ↗
February 2027
- Sat 2/20Kennekuk Road Runners - Members Only Fat AssDanville, IL · 28.4 Miles · register ↗
March 2027
- Sat 3/6The Dirty South RoubaixAlto Pass, IL · 100K · 50K · from $80 · registration closed · register ↗
- Sat 3/20American BottomsColumbia, IL · 113 Miles · 56 Miles · register ↗
- Sat 3/27Clinton Lake UltraDeWitt, IL · 30 Miles · 10 Mile · register ↗
- Sat 3/27Schon Park 3/6/9 Endurance RunsGlen Carbon, IL · 3 Hour · 6 Hour · 9 Hour · from $60 · register ↗
- Sat 3/27SkunkApe 806/524/314 Trail RaceDixon, IL · 806 Hour · 524 Hour · 314 Hour · Trail · register ↗
- Sat 3/27The PiasaGrafton, IL · 50K · 25K · 12.5K · from $95 · register ↗
April 2027
- Thu 4/8Potawatomi Trail RunsPekin, IL · 200 Miles · Trail · register ↗
- Sat 4/17Earth Day 50k/15 Mile/5 MileCrystal Lake, IL · 50K · 15 Miles · 5 Miles · register ↗
- Sat 4/17Loud Thunder 50Illinois City, IL · 50 Mile · 50K · Half Marathon · register ↗
- Sat 4/24Childish NonsensePalatine, IL · 50 Mile · 50K · 25K · 5.5 Miles · register ↗
May 2027
- Sat 5/15CHICAGO 7-11 Hour Endurance RunWillow Springs, IL · 11 Hour · 7 Hour · register ↗
- Sat 5/15Galena Sky Trail RacesGalena, IL · 8 Hour · 4 Hour · Trail · register ↗
- Sat 5/15White Squirrel RoubaixOlney, IL · 100K · 50K · 20K · from $30 · registration closed · register ↗
- Sat 5/22Red Cedar Trail Races at Giant City State ParkMakanda, IL · 5K · 13.6 Miles · Marathon · 50 Mile · Trail · from $15 · register ↗
June 2027
- Sat 6/5Elsa Chicken Plucker Backyard UltraCharleston, IL · Timed · register ↗
July 2027
- Fri 7/9CMAR Trail Races: Cry Me A RiverChillicothe, IL · 100 Mile · 50 Mile · 50K · Half Marathon · 4 Miles · Trail · register ↗
- Sat 7/17Quail Ridge Farm Backyard UltraAlbion, IL · Timed · Trail · register ↗
August 2027
- Sat 8/7Highlander Assault Obstacle RacePingree Grove, IL · 50K · 15K · 5K · from $65 · register ↗
- Sat 8/21Shawnee Hills Trail RacesOzark, IL · 100 Mile · 100K · 50K · Half Marathon · Trail · register ↗
September 2027
- Fri 9/3The Ultimate SUCKCuba, IL · 50 Mile · 25 Miles · 10 Mile · from $109 · register ↗
- Sat 9/4Temptation 200 UltrasForest City, IL · 200K · 50K · 10K · register ↗
- Sat 9/11Timely NonsenseChicago, IL · 12 Hour · 6 Hour · 3 Hour · register ↗
October 2027
- Sat 10/2The Hennepin HundredSterling, IL · 100 Mile · 50 Mile · 50K · register ↗
- Sat 10/9Des Plaines River Trail RacesLake County, IL · 50 Mile · 50K · Marathon · Half Marathon · Trail · register ↗
- Sat 10/9Farmdale Trail RunEast Peoria, IL · 100 Mile · 50 Mile · 30 Miles · Half Marathon · 10K · Trail · register ↗
- Sat 10/23Fancy Nonsense 25k/50kWillow Springs, IL · 50K · 25K · 5 Miles · register ↗
Planning a race
- The adventure listrim to rim, the big rounds, and routes worth planning a year around
- Getting inhow entry works for the races that sell out or ballot
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