⏵ Course guide · Auburn, Western States Trail
Inside Trail Racing's No Hands Trail Run follows the historic Western States Trail out to No Hands Bridge, then up the dreaded K2 training hill, with the Furious 50K extending onto the Wendell T. Robie Trail. I will walk you through the course first, then give you a pacing and fueling plan built for a January day in the Sierra foothills. There are free calculators along the way to dial in your own numbers.
These facts come from the official Inside Trail Racing event page. Check the current year details, cutoffs, and aid stations before you commit. Race logistics change year to year.
All distances share the historic Western States Trail and the K2 training hill; the 50K goes further by crossing into additional Auburn SRA terrain.
Every distance touches the Western States Trail, crossing the historic No Hands Bridge before tackling the K2 training hill, one of the toughest climbs in the area. The 8K and Heavy Half both include killer singletrack along the American River canyons and banks; the Half continues past No Hands Bridge and up K2 toward Cool, California.
Not to be outdone by the K2 training hill, the Furious 50K extends the adventure by crossing Highway 49 to traverse the Wendell T. Robie Trail, continuing to explore the Auburn State Recreation Area beyond what the shorter distances see.
Every distance finishes the same way: a climb up the punishing Overlook Hill, then a brief, well-earned reward, 50 meters of perfectly flat path to the finish line.
With a named, dreaded climb in the middle of the course and another one at the very end, this is not a race to save all your effort for the finish line sprint.
A grade-adjusted pace target built for the K2 training hill's actual grade gives you an honest number for what is sustainable, rather than what feels right in the moment. Runners who fly up K2 on adrenaline alone often pay for it well before Overlook Hill arrives.
A vert-aware finish prediction that accounts for both K2 and the closing Overlook Hill climb is far more honest than a flat-course pace estimate. Check it against the 8.5 hour cutoff early enough on the 50K to adjust your effort, not just after Overlook Hill has already taken its toll.
⏵ Free tools to pace this course
A 7:30 AM January start in the Sierra foothills usually means a cold beginning that warms up considerably by the time you reach K2 and Overlook Hill.
Aim for roughly 45 to 75 grams of carbohydrate per hour on the 50K. K2 hits early in the race, and it is tempting to focus entirely on the climb and forget fueling, but that sets up a harder second half once the Wendell T. Robie Trail extension arrives.
Sodium in the 300 to 700 mg per liter range covers most runners. Plan your clothing and hydration for a cold 7:30 AM start that can warm up meaningfully by the time you reach Overlook Hill.
⏵ Build your fueling plan
Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and a cold Sierra foothills morning 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, this exact Western States Trail course profile, and your projected splits for K2 and Overlook Hill. Summit Line reads your real training, builds a plan for named-climb racing, and rehearses your fueling so race day is something you execute, not guess at.
The Furious 50K earns its name: 31.3 miles with about 5,550 feet of gain, running along the historic Western States Trail, out to No Hands Bridge, and up one of the toughest climbs in the area, the dreaded K2 training hill. Every distance also finishes with a punishing climb of its own, Overlook Hill, right before the flat 50-meter path to the finish line.
The Furious 50K carries about 5,550 feet of gain over 31.3 miles, roughly 177 feet per mile, with the K2 training hill as its signature climb. The course is varied and far from monotonous: all distances share the demanding K2 climb, and the 50K extends further by crossing Highway 49 to traverse the Wendell T. Robie Trail through the Auburn State Recreation Area.
A January date in the Sierra foothills near Auburn typically means cold morning starts that can warm up considerably by midday, so layer your plan accordingly. Aim for roughly 45 to 75 grams of carbohydrate per hour on the 50K, and sodium in the 300 to 700 mg per liter range. Given the K2 climb hits early in every distance, make sure you are fueling before and during that section rather than waiting until after the hardest climbing is behind you. Build your numbers with the free ultra fueling calculator before race day.
The Furious 50K carries an 8.5 hour time limit, and all runners must be off the course by 4:00 PM regardless of their 7:30 AM start time. Given the terrain includes the demanding K2 climb and the Wendell T. Robie Trail extension, that window has real margin built in but should not be treated as unlimited.
Both the 8K and Heavy Half include killer singletrack trails along the banks and canyons of the American River, with the Half crossing the historic No Hands Bridge, climbing K2, then heading toward Cool, California. The 50K adds crossing Highway 49 to explore the Wendell T. Robie Trail deeper into the Auburn State Recreation Area. Every distance finishes by climbing the punishing Overlook Hill before the flat final stretch to the finish.
The K2 training hill and finishing Overlook Hill climb make this a genuine test even at shorter distances, so the 8K or Heavy Half are better entry points than the Furious 50K for a first-time trail runner. If you have some hill training under your belt and want a taste of the historic Western States Trail without the full 50K commitment, the Heavy Half is a strong choice.
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<a href="https://runsummitline.com/guides/no-hands-trail-run">The No Hands Trail Run course guide</a>This guide is independent and for planning only. The course details, dates, cutoffs, and aid stations 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.