Ultramarathons in Illinois
11 upcoming ultramarathons in Illinois, USA.
10 cities
Busiest: November
From €57
Upcoming races
Your guide to ultramarathons in Illinois, USA
There are 11 upcoming ultramarathons in Illinois, USA, spread across 10 cities. Filter by distance or terrain to narrow things down, and save the races you like the look of.
Most take place in November, January and April. Next up is 27th Chicago Lakefront Fall - 50M in Chicago on 31 October 2026.
Questions runners ask
How many ultramarathons in Illinois, USA are there?
Finndu lists 11 upcoming ultramarathons in Illinois, USA, across 10 towns and cities. The list is updated twice a day as organisers announce new races.
When is the next one?
27th Chicago Lakefront Fall in Chicago, on 31 October 2026.
Which month has the most ultramarathons in Illinois, USA?
November, followed by January and April.
How much does it cost to enter?
Entry starts from US$65. Fees vary from race to race, so check each race page for its current price.