October ultramarathons in Illinois, United States

Flat, fast point-to-point course along the scenic Hennepin Canal from Sterling to Colona, featuring historic locks, lift bridges, and autumn farmland views

Flat, fast crushed limestone trail winding through forests and wetlands with bridges, minimal road crossings, and occasional water from flooding

2.07-mile gravel and concrete loop at Arrowhead Lake Campground with minimal elevation, designed for speed and high mileage in Johnston City, IL.

Winding single-track trails, rolling service roads, and open prairie across 800 scenic acres at Farmdale Reservoir in central Illinois

Grassy paths, dirt single track, creek crossing, and demanding hills on private land between Fox Ridge State Park and Warbler Ridge in Charleston, IL

Single-track trails with elevation changes in the Palos Trail system, double out-and-back route passing historic Chicago Pile-1, playful race theme

Multiple out-and-back segments along the Lakefront running path, mostly asphalt with some concrete, among the flattest 50k and 50-mile courses