American Bottoms 113 Columbia, Illinois, United States
Event description
113.5 & 56.8 mile ultramarathons. From Columbia, IL. to the confluence of the Kaskaskia and Mississippi Rivers.
Course maps
Foot race
|
20 Mar 2027
113.5 mi
Distance
Elevation gain
427 ft
Elevation high
400 ft
Elevation avg
Course last updated 1 Apr 2026

Stats summary
| Race distance | Distance | Ele gain | Ele loss | Ele avg | Paved | Gravel | Dirt | Narrow |
|---|---|---|---|---|---|---|---|---|
| 113 Mile | 113.5 mi | 1,591 ft | 1,594 ft | 400 ft | 78% | 0% | 22% | 0% |
| 56 Mile | 56.8 mi | 791 ft | 830 ft | 400 ft | 77% | 0% | 23% | 1% |
Foot race
20 Mar 2027
Race organization
American Bottoms
Race director
David Hartrum
Event locked by RD
Event history
Race data contributors