50K Races in Illinois
As of October 6, 2026, Crewable lists 12 upcoming 50K races in Illinois from October 2026 to August 2027. The next is Des Plaines River Trail Races on October 10 in Lake County.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
3 racesNovember 2026
1 raceDecember 2026
1 raceJanuary 2027
1 raceMarch 2027
1 raceApril 2027
3 racesJuly 2027
1 raceAugust 2027
1 raceQuick answers
What is the next 50K race in Illinois?
Des Plaines River Trail Races, on Saturday, October 10, 2026, in Lake County. Distances: 50 mi, 50K, Marathon.
What is the busiest month for 50K races in Illinois?
October 2026, with 3 of the 12. April 2027 follows with 3.
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