2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Modelled energy-cost change 4.9% versus flat · net elevation -5 m
Decision summary
Lower than 54% of comparable mapped races
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for Maah Daah Hey Trail Run (Medora) Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The Maah Daah Hey Trail Run (Medora) Ultramarathon route has 2,080 m of ascent, 2,085 m of descent and an estimated 4.9% grade-adjusted pace penalty versus a flat route.
The Maah Daah Hey Trail Run (Medora) Ultramarathon route finishes at Medora, North Dakota. Underfoot, expect single-track trail of dirt, clay, sandstone and scoria with creek crossings. It passes Maah Daah Hey Trail, North Dakota Badlands, Little Missouri National Grasslands and Little Missouri River. The 116-mile distance is an out-and-back from Medora to the trail's northern terminus and back, branded as the 100-mile ultra.
Pacers allowed for 50 and 100 mile runners; must be 18 or older and registered.
The stored route produces 2,080 m of ascent, while a source states 3,647 m. GPS sampling and elevation models can produce different totals, so both are labelled rather than combined.
Its normalised GAP factor is 4.9% slower than a flat course, with about 2080 m of total ascent.