⏵ Course guide · Minnesota North Shore ultra
Wild Duluth sends its 100K and 50K point to point across the rugged, rocky, rooty Superior Hiking Trail through the hills above Duluth, Minnesota, with views out over Lake Superior along the way. I will walk you through the course and the weekend schedule first, then give you a pacing and fueling plan built for technical, point-to-point trail. There are free calculators along the way to dial in your own numbers.
These facts come from the official race site. No official elevation gain figure is published for the 100K or 50K, so it is left out here rather than estimated. Check the current year details, cutoffs, and aid stations before you commit. Race logistics change year to year.
Both ultras run point to point rather than in loops. The 50K starts at Oldenburg Point in Jay Cooke State Park and the 100K starts even earlier at Bayfront Park downtown, and both finish back at Bayfront. There is no repeating loop to learn here, just miles of singletrack that only go one direction.
The race's own description of its trails, rugged, rocky and rooty, is not marketing exaggeration. The Superior Hiking Trail through the hills above Duluth stays technical for long stretches, and there is no flat, runnable recovery section to look forward to. Treat every mile as one that demands attention to foot placement, especially once fatigue sets in during the back half.
Because this is not a loop course, you cannot fall back on knowing what is coming from an earlier lap, and any plan to drop out means getting to the next aid station rather than cutting back to a start/finish area. Study the course map and elevation profile before race day so you have a mental picture of where the climbs and technical sections fall, since you will only see each section once.
The payoff for the technical footing is real: Wild Duluth runs almost entirely within the city limits of Duluth, but the Superior Hiking Trail makes it feel remote, with views out over the city and Lake Superior along the way. Established in 2009 and now a UTMB Index race, the event has more than a decade of local knowledge behind its course marking and aid station placement.
Rocky, rooty singletrack punishes flat-pace thinking. The runners who have a good day here respect the terrain from mile one instead of banking time early and paying for it when the footing gets technical late in the race.
On technical trail, effort spikes on rooty, rocky sections even when the grade barely changes, so pacing by feel alone can drift faster than you realize. A grade-adjusted pace target gives you an honest baseline for the climbs, and from there, build in extra caution for the technical descents where a bad step costs far more time than running a few seconds slower would have.
A flat-course pace estimate will lie to you here. Build a vert-aware finish prediction that reflects the Superior Hiking Trail's climbing and technical footing, not a road-race pace band, so your expectations for the 50K or 100K match what this course actually demands.
⏵ Free tools to pace this course
Mid-October on Lake Superior can be mild fall running weather or genuinely cold, and the 100K starts before sunrise, so plan your fueling and layers for conditions that can change fast.
Aim for roughly 60 to 90 grams of carbohydrate per hour across both ultra distances. Because you only pass each aid station once, plan exactly what you need at each stop rather than assuming you can adjust on the fly the way you can on a looped course.
Lake Superior weather in mid-October swings widely, from mild to genuinely cold and wet, so bring layers you can shed as the day warms and sodium in the 300 to 700 mg per liter range, leaning higher if you end up working harder than expected on the technical sections. Starting before sunrise for the 100K means your early miles could be cold regardless of the daytime forecast, so do not skip a warm layer for the start line.
⏵ Build your fueling plan
Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and an October North Shore day with the free ultra fueling calculator. Browse the rest of the free running tools at the tools hub.
⏵ Train for it with Summit Line
Get a race-day plan built around YOUR fitness and this technical, point-to-point Superior Hiking Trail course. Summit Line reads your real training, builds a plan for rocky, rooty terrain, and rehearses your fueling so race day is something you execute, not guess at.
The Superior Hiking Trail through Duluth is rugged, rocky, and rooty, and Wild Duluth runs it point to point rather than in loops, so there is no lap to learn and adjust to. The 50K starts at Oldenburg Point in Jay Cooke State Park and finishes at Bayfront Park downtown, while the 100K starts even earlier at Bayfront and covers more of the trail before finishing there too. No official elevation gain figure is published for either distance, but the terrain itself, root-heavy singletrack with the rolling hills above Duluth, is the difficulty here more than any single climb.
You are on the Superior Hiking Trail almost the entire way, a well-established long-distance trail known for rocky, rooty singletrack and repeated short climbs through the hills above Lake Superior. Wild Duluth's own copy calls the trails rugged, rocky, and rooty, and that holds up mile after mile. Expect technical footing throughout, with rewarding views of the city of Duluth and the lake breaking up the effort.
Mid-October in Duluth sits right on the coast of Lake Superior, so conditions can swing from mild fall weather to genuinely cold and wet with very little warning, and the 100K in particular starts before sunrise. Aim for roughly 60 to 90 grams of carbohydrate per hour on either ultra distance, and keep sodium in the 300 to 700 mg per liter range, leaning higher if the day turns warm and humid or you are sweating heavily on the climbs. Because this is a point-to-point course rather than a loop, plan your intake around the aid stations you will actually pass rather than assuming you can refuel wherever you like. Build your numbers with the free ultra fueling calculator before race day.
Wild Duluth spreads its four races across two days. Saturday, October 17 is ultra day: the 100K starts at 6:00 AM from Bayfront Park and the 50K starts at 8:00 AM from Oldenburg Point in Jay Cooke State Park, both finishing at Bayfront Park. Sunday, October 18 is shorter-distance day: the Terribly Tough 10K starts at 9:30 AM from the Munger Trail Trailhead and the Harder 'n Heck Half Marathon starts at 10:30 AM from Chambers Grove Park, both finishing at Spirit Mountain. Runners who complete a Saturday ultra and a Sunday race back to back can earn the WILDMAN or WILDWOMAN challenge award.
It can be, if you respect the technical footing. The Superior Hiking Trail is well marked and the race has run since 2009, so the logistics are dialed in, but the trail itself does not let up: rocks and roots the whole way rather than smooth, runnable singletrack. If you have trained on rooty, technical New England or Midwest trail and you are comfortable with a point-to-point course where you cannot bail back to a familiar loop, Wild Duluth's 50K is a reasonable first ultra. The 100K asks for real trail ultra experience given the extra distance on this terrain.
Link this guide
Race directors and clubs: link or embed this guide anywhere. It stays current.
<a href="https://runsummitline.com/guides/wild-duluth-races">The Wild Duluth Races course guide</a>This guide is independent and for planning only. The course details, dates, distances, and logistics come from public sources and can change year to year, so confirm the current specifics with the official race before you register or run. The fueling and pacing advice is general and not medical advice.