This is a unique road ultra on a beautiful course, following the Mississippi River, as you run through the historic American Bottom. Race headquarters is in Columbia, Illinois just outside of St. Louis, Missouri. The race offers a 113 mile and a 56 mile option. The course loosely follows the American Discovery Trail and the Kaskaskia - Cahokia Trail (Illinois' first road). You’ll watch the sun rise over the Illinois bluffs while running on levees and deserted backroads, from Columbia to the confluence of the Kaskaskia and Mississippi Rivers. You’ll make your way through many historic sites, including Piggott's Fort, Fort de Chartres, and the town of Prairie du Rocher. This is a flat and fast course with generous cut off times, plenty of aid stations, and a friendly atmosphere. It will make a great first hundred miler, or a chance for you to set a new personal record at this distance. So, if you're interested in a no frills ultra with a low entry fee, then come test yourself this spring in the American Bottom. Please visit americanbottomsultra.com for full details
6:00 a.m. Start. Saturday March 20th, 2027 5:00 p.m. Finish. Sunday March 21st, 2027 35 hour cut-off 18:30 minute / mile pace 1,591 ft. of elevation gain total Out & back course 51% pavement / 49% gravel 17 Aid Stations
Saturday March 20th, 2027 6:00 a.m. Start 11:30 p.m. Finish 17½ hour cut-off 18:30 minute / mile pace 791 ft. of elevation gain total Point to point course 51% pavement / 49% gravel 8 Aid Stations
Contact americanbottomsultra.com/contact for coupon code
Mar 20, 2027
Distance — 181.9K
Type — Running
06:00
$150.00
Mar 20, 2027
Distance — 90.1K
Type — Running
06:00
$75.00
These values represent the 3-year monthly averages for March in Columbia.
Learn more about the host city, Columbia.
Columbia is a city mainly in Monroe County with a small portion in St. Clair County in the U.S. state of Illinois, about 12 miles (19 km) south of St. Louis, Missouri. The population was 10,999 at the 2020 census.
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location_on Columbia, Illinois, US
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location_on St. Louis, Missouri, US
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