Saturday, November 7, 2026
· In 9 days
Distance
Terrain
Difficulty
Screaming Monkey 100 takes runners onto the trails of northwest Louisiana across a weekend, with 10K, 25K, 50K, 100K and 100 mile options on the programme. The course rolls over mountain bike single track and equestrian trails and drops through a ravine that feels out of place in Louisiana. Runners share the woods with the bells of a nearby veterans cemetery and the chimps at Chimp Haven, whose calls carry across the course. It works as an approachable first ultra at the shorter distances and as a long, patient day out at 100K and 100 miles.
Mountain bike single track and equestrian trails
A ravine that should not exist in Louisiana
Bells of the veterans cemetery ringing across the course
The chimps at Chimp Haven as company on the trails
Race Day
Other questions
The race was put together with first timers in mind. The 10K and 25K give a taste of the trails, the 50K is the classic first ultra step, and the 100K and 100 mile options are there for runners who want the full day and night out.
Two things. The bells of the veterans cemetery next door ring across the course, and the chimps at Chimp Haven can be heard calling from their sanctuary. Both are part of the character of the race.
Distance changes are handled by the timing team rather than on the website. Contact Rad Racing through the Facebook page or the newsletter contact address and they will confirm what is possible for your entry.
Trail races in Louisiana can meet heat, storms or standing water. Any change to the course or the timetable is announced by Rad Racing through their website, newsletter and Facebook page, so check those before you travel.
Rad Racing relies on local volunteers for marshalling, aid stations and registration. Get in touch through the Facebook page or the newsletter to put your name forward and hear what roles are open.
Entry fee not listed
Check the race's registration page for pricing.Shreveport, USA
Saturday, November 7, 2026
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