El Diablo Hundo

El Diablo Hundo is a trail ultra in Doyline, Louisiana, held on October 3, 2026. Two distances are on the program, both starting at 6:00 AM: a 100-mile race and a 100K (62 miles). The shared start time means the two fields head out together before the sun is fully up.

Louisiana in early October usually means warm, humid conditions, and that is the main variable to prepare for on a long trail race here, more than any climbing. Practice running in the heat, plan your drinking and electrolyte intake carefully and expect a slower pace than you would run in cooler weather. The 100K is a good choice for a runner moving up from 50-milers, while the 100-mile race is for those who already have a 100K or longer finish and are ready to run through the night. Both distances call for a 20-to-24-week build with back-to-back long runs and at least one long night run to test your headlamp, layers and fueling in the dark. Crew and drop-bag logistics deserve attention well before race week.