Cascade Crest 100 Course Guide

The early climb and the PCT miles

The loop opens by going straight up. The steepest climb of the whole day comes in the first 5 or 6 miles, roughly 2,500 feet, before your body is warmed up and while the field is still bunched and adrenaline is high. This is the classic trap. It feels easy in the morning, and it is so tempting to power up it, but you have something like 95 miles to go. Hike the steep pitches, keep your effort honest, and get to the top with your legs intact.

From there you spend a big chunk of the early-to-middle race on the Pacific Crest Trail, around 30 miles of smooth, runnable, well-graded singletrack with huge Cascade views. This is the most flowy part of the course and where it is easy to feel great and overrun your effort. Run it relaxed, eat and drink on schedule, and treat these miles as the place you set up the back half rather than the place you make your day.

The tunnel, Hyak, and the rope descent

Near the middle of the loop you drop toward Snoqualmie Pass and pass through the old railroad tunnel, about 2.5 miles of cool, flat, pitch-black straight line where a good light and a steady jog eat up distance fast. The Hyak area around here is a major hub, and it is where pacers are allowed to join, so a lot of runners pick up their pacer and reset for the second half here. Use this stop. Resupply, sort your night gear, get your head right, and roll out before you cool off and stiffen up.

Later in the loop the course throws in its signature rope-assisted descent, a steep enough drop that there is literally a rope to help you down. Take it carefully, especially if your hands are cold or the dirt is loose, because a silly fall here helps nothing. This is also where the course shifts character from runnable trail to the kind of steep, technical, attention-demanding terrain that defines the rest of the day.

The Cardiac Needles and the long late climb

The back half is the whole race. After No Name Ridge you hit the Cardiac Needles, a pine-needle-covered run of small peaks where you are basically always either climbing or descending, one after another, with no rhythm and no rest. They are not huge individually, but stacked up late at night on trashed legs they are a grind that breaks people mentally as much as physically. There is also a long climb in here, on the order of 3,000 feet, that lands in the miles up around the high 70s and low 80s, which is a cruel place to put the longest pull of the day.

Then there is the section runners have nicknamed the Trail from Hell, an overgrown, rough, slow stretch that you usually meet in the dark and tired, plus the high out-and-back toward Thorp Mountain near the high point. This whole region is where the race is decided. Whatever you saved on the early climb and the PCT, you spend it here. Keep eating, keep your feet moving, and remember that everyone around you is suffering through the exact same thing.

Aid stations, crew, drop bags, and the night

There are roughly 16 full-service aid stations plus a couple of water-only stops around the loop, with the usual fluids, food, and help, and drop bags at the designated points. Some carries between stations are long and climby, so leave each one with enough food and fluid to actually cover the gap instead of rationing to empty. Crew can reach you at a handful of points (Stampede Pass and Hyak among them), and pacers are allowed from Hyak, so plan your handoffs and your night gear around those spots.

And plan for the night, because you will run a full one. Mid-July days in the Cascades can be warm and exposed, then it gets genuinely cold up high after dark. Carry a light layer and a headlamp setup you trust with backup batteries, and know that the slow, technical Cardiac Needles and Trail from Hell miles are the ones you will be grinding through in the small hours. Pull the current cutoff chart and make sure you reach each aid station with margin, because the back half is where a thin buffer disappears fast.

Pace the climbs by grade, not by the watch

Your flat-ground pace is meaningless on the early 2,500 foot wall and the long late climb. What matters is grade-adjusted effort: hold a steady output you can keep up the grade and power-hike the steep pitches without feeling like you are losing the race. The number one mistake at Cascade Crest is running the early climb and the buttery PCT miles too hard because they feel easy, then having nothing left for the Cardiac Needles. Use a grade-adjusted pace to turn your real fitness into honest climbing targets so you do not torch the first half.

Save your quads for the technical back half

You give back basically all 23,000 feet of climb, and a lot of that descending is steep, rocky, rope-assisted, or overgrown, late, and in the dark. The runners who finish strong are the ones who descend controlled and light early instead of letting gravity hammer their legs on the PCT. Blow out your quads in the first half and the late descents off Thorp and through the Needles turn into a painful, dangerous shuffle. Practice long technical descending before race day so your legs can still take it at mile 90.

Build a vert-aware finish prediction

Do not guess your Cascade Crest finish off a road or flatter-100 time. The 23,000 feet of climbing, the technical and overgrown trail, the tunnel, and a full night all add real time. A vert-aware finish prediction that accounts for this course’s climbing gives you a realistic window and lets you work back into the 34 hour limit and the intermediate cutoffs, so you actually know how much buffer you have at each checkpoint instead of hoping.

Carbs: steady, trained, and kept up overnight

For a day this long, aim for around 60 to 90 grams of carbohydrate per hour, and only push the higher end if your gut is trained for it. The real test here is not the first half, it is hour 20-something in the dark when your appetite is gone and your stomach has gone quiet. Use a glucose-plus-fructose blend so you can absorb more, rehearse your exact hourly carb number on long back-to-back days, and have a few easy-to-swallow options for overnight so you keep fueling the engine even when nothing sounds good.

Sodium and fluid: plan for the heat, the cold, and the gaps

In the warm exposed daytime miles your sweat and sodium losses climb, so bias your sodium toward 500 to 700 mg per liter of fluid, higher if you run salty, and carry enough fluid to cover the long climby carries between aid stations. At night the temperature drops and you sweat less, but the work of the Cardiac Needles still drains you, so keep your electrolytes going rather than shutting fueling off. Weigh yourself before and after a hot long run to learn your real sweat rate, then build the plan around your own number.