2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Modelled energy-cost change 8.0% versus flat · net elevation -0 m
Decision summary
Lower than 46% of comparable mapped races
18:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for Wild Duluth Races 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 Wild Duluth Races Ultramarathon route has 2,801 m of ascent, 2,801 m of descent and an estimated 8.0% grade-adjusted pace penalty versus a flat route.
The Wild Duluth Races Ultramarathon route starts at 50K starts at Oldenburg Point Picnic Area in Jay Cooke State Park; 100K starts at Bayfront Festival Park in downtown Duluth and runs out to Oldenburg Point and back. Both finish at Bayfront Festival Park and finishes at Bayfront Festival Park (Railroad Street), downtown Duluth, Minnesota. Underfoot, expect about 99% of the 100K and 50K course follows the Superior Hiking Trail: extremely rugged, hilly singletrack laced with rocks and roots, mixed with wide grassy trails, mountain bike trails, some paved sections and short road walks. It passes Point of Rocks Park, Superior Hiking Trail, Jay Cooke State Park, Ely's Peak and Bardon's Peak. Post-race soup feed for 100K/50K finishers at Bayfront Park.
Courses are marked with pink flagging and pins; the 50K and 100K also follow the Superior Hiking Trail's blue blazes. October temperatures typically range 37-52 degrees Fahrenheit. 6. 100K pacers are allowed from mile 40.5 onward, one pacer at a time.
Its normalised GAP factor is 8.0% slower than a flat course, with about 2801 m of total ascent.