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⏵ Course guide · Washington ultra

Deception Pass 50K Course Guide

The Deception Pass 50K is a Rainshadow Running coastal ultra at Deception Pass State Park, out on the Whidbey and Fidalgo islands north of Oak Harbor, and it fools people. The vert is modest, but the footing is brutal: twisty rooty rocky singletrack, slick wood bridges, and deep mud, with cliff-edge views over the pass that fight you for your attention. I will walk you through the course first, then give you a pacing and fueling plan built for the wet and the technical terrain. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

Deception Pass 50K quick facts

Date
Late fall (2026: 50K Sat Nov 7, 25K Sun Nov 8)
Location
Deception Pass State Park, Whidbey and Fidalgo islands, near Oak Harbor, WA
Distances
50K (about 31 mi) and 25K (about 15.5 mi)
Elevation gain
50K: about 4,200 ft · 25K: about 2,600 ft (rolling, no big climbs)
50K start
7:00 AM (optional 6:00 AM early start)
Cutoff
50K: roughly 9 hr with intermittent cutoffs · 25K: about 6 hr
Aid stations
50K: 4 along the course · 25K: 1 (Bowman Bay, mile 8.2)
Qualifier
No Western States, UTMB, or Hardrock qualifier status listed by the race

These facts come from the official race site and UltraSignup. This race has moved around the late-fall and early-winter calendar over the years, so check the current date, cutoffs, and aid stations in the race-day details before you commit. Race logistics change year to year.

The course: where Deception Pass is won and lost

The 50K is about 31 miles and roughly 4,200 feet of gain, almost all of it on coastal singletrack inside Deception Pass State Park. There is no big mountain to climb. Instead the day is a long string of short rollers, headland trail, and two repeated loops, and the thing that decides your race is how well you move over technical ground when you are tired, not how fast you can run flat.

The bridge, the cliffs, and Goose Rock

The early miles weave through the park along the water, cross the famous Deception Pass bridge, and roll over Goose Rock, the high point of the course, which the 50K goes over twice. This is gorgeous, dramatic trail with cliff-edge views over the pass, and it is also where you have to decide to keep your eyes down. The footing here is rooty, rocky, and narrow, and the wood bridges and rock slabs get slick when they are wet. It is very easy to look up at the water, catch a toe, and go down hard.

Run the early rollers easy. None of these little climbs is worth pushing, and hiking the short steep pitches keeps your legs fresh for the back half. The course gives back time on the runnable cruisey sections, so save your matches for those instead of burning them on the technical ups.

The Hoypus loops: where the 50K is really decided

After going over Goose Rock the second time, the 50K heads out to Hoypus Point and runs two lollipop-shaped loops, roughly 6 miles each, that the 25K never sees. This is the heart of the race. The Hoypus trail is mostly forested with no water views to distract you, and depending on the year it can turn to ankle-deep mud that has runners feeling like they are about to roll an ankle every step.

Mentally this is the grind. Two laps of similar-looking forest, late in the day, on tired legs and sloppy footing. Break it into pieces, keep eating, and stay patient through the mud instead of fighting it. The people who come apart here are usually the ones who spent themselves early on the pretty cliff trail and arrived at Hoypus with nothing left for the slog.

Wet footing and the late-race shuffle home

Almost the whole course is technical, and in typical damp late-fall conditions the roots, rocks, and wood bridges are greasy and the mud is deep. Your feet will get soaked early, so accept that now and pick shoes with real grip and drainage. The four aid stations on the 50K are friendly Rainshadow stops, but the gaps between them are slow going, so carry enough to keep eating and drinking between them.

Coming back off the Hoypus loops to the finish, the trail is the same technical ground you started on, except now your legs are shot and your concentration is fried. That is exactly when people fall. Train your feet for slick rooty terrain ahead of time so you can still move and stay upright when you are tired, because that skill, more than fitness, is what gets you home clean here.

Pacing strategy for a technical, low-vert 50K

Deception Pass is not a pace-chart race. The vert is small, but the terrain is slow, so your real job is to hold an even effort over footing that constantly breaks your rhythm, and to leave plenty in the tank for the two Hoypus loops at the end.

Run effort, not pace, on broken ground

Your flat-ground splits will lie to you here. Constant roots, rocks, mud, and short rollers mean your moving pace swings wildly minute to minute, so chasing a number is a trap. Run a steady, conversational effort you can hold all day, hike the short steep pitches, and let the technical sections be slow without panicking about the clock. A grade-adjusted pace helps you translate your real fitness into an honest effort target instead of getting fooled by how slow the terrain makes you feel.

Build a finish prediction that respects the terrain, not just the vert

Do not predict your Deception Pass finish off a road 50K time or even off the vert number alone, because the slow technical footing and the mud add real time that elevation gain does not capture. A finish prediction you can sanity-check against the course gives you a realistic window, and then you can work backward into the intermittent cutoffs so you know how much buffer you actually have at Bowman Bay and on the Hoypus loops instead of guessing. If you are on the bubble, the optional early start buys you an extra hour of cushion.

⏵ Free tools to pace this course

Fueling strategy for a cold, all-day coastal effort

Most runners are out on the Deception Pass 50K for somewhere around 5 to 9 hours, in cool damp weather, on terrain that keeps your eyes down. That makes a simple, rehearsed fueling plan just as important as fitness, because it is hard to think clearly and eat well when you are cold and concentrating on your feet.

Carbs: steady, simple, and trained

For a 5 to 9 hour effort, aim for around 60 to 90 grams of carbohydrate per hour, leaning to the higher end only if your gut is trained for it. The cold and the constant technical focus make it easy to forget to eat, so set a timer or eat on a schedule rather than waiting until you feel low. Keep it simple and easy to get down on the move, since you will not have many smooth stretches to fuss with wrappers. Practice your exact race-day carb rate on long runs so it feels automatic, not like a chore you skip when the trail gets busy.

Hydration, salt, and staying warm enough to eat

You sweat less in the cold than in the heat, but you still need steady fluid and sodium, so drink to thirst and add salt rather than guzzling plain water all day. The bigger risk at Deception Pass is getting cold and damp, because once you are shivering your appetite and your coordination both fall off a cliff. Carry a layer, keep moving, and eat early and often so your engine stays warm. Weigh yourself before and after a long run in similar conditions to learn your real sweat rate, then build the plan around your own number.

⏵ Build your fueling plan

Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and a cool coastal effort 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 Deception Pass course profile, and your projected splits. Summit Line reads your real training, builds a plan for the technical terrain and the Hoypus loops, and rehearses your fueling so race day is something you execute, not guess at.

Start free →Explore the demo

Deception Pass 50K FAQ

How hard is the Deception Pass 50K?

It is harder than the small vert number makes it look. There are no big mountain climbs here, only about 4,200 feet of gain spread over roughly 31 miles, but the footing is the real opponent: twisty coastal singletrack that is rooty, rocky, and slick, with wet wood bridges and ankle-deep mud on the Hoypus loops. People fall on this course, and the constant technical terrain wears you down in a way that flat-pace math never predicts. The overall cutoff sits around 9 hours with intermittent cutoffs along the way, so it rewards steady, careful, all-day running far more than raw speed.

How much climbing is in the Deception Pass 50K?

The 50K has roughly 4,200 feet of gain and the same amount of loss over about 31 miles, per the official course details. There is no single signature climb. Instead it rolls constantly, with the high point being Goose Rock, which the 50K goes over twice, then it settles into two lollipop-shaped loops out at Hoypus Point. The 25K is shorter at about 15.5 miles with roughly 2,600 feet of gain.

What are the cutoff times for the Deception Pass 50K?

The 50K overall cutoff runs around 9 hours, and there are intermittent cutoffs at points along the course (for example at Bowman Bay early and at the Cornet Bay area on the repeated loops), so you cannot bank all your buffer for the end. The 25K has about a 6-hour overall limit with one intermediate cutoff at Bowman Bay near mile 8.2. The 50K also offers an optional early start an hour before the gun if you want more cushion. Always confirm the exact current cutoffs in the race-day details before you toe the line.

What is the terrain and footing like at Deception Pass?

It is classic Pacific Northwest coastal trail: mostly singletrack through Deception Pass State Park, sometimes smooth but just as often rocky and rooty, with about a mile of paved park road near the start and a few other pavement bits. You cross the dramatic Deception Pass bridge and run cliff-edge trail with big water views. The catch is that the views compete with footing that demands your full attention, and the wet wooden bridges, roots, and rocks get slick. Out at Hoypus Point the trail is forested and can turn to deep mud, so quick feet and good trail shoes matter more than leg speed.

What is the weather usually like for the Deception Pass 50K?

Plan for cool, damp, coastal late-fall weather in the northern Puget Sound. It is often in the 40s with a real chance of rain, wind off the water, and slick, saturated trail underfoot, though you can also catch a crisp clear day. The bigger weather story is what the rain does to the footing, since roots, rocks, and the wood bridges get greasy and the Hoypus mud deepens. Dress for wet and cold, carry a layer, and expect your feet to get soaked.

Is the Deception Pass 50K a good first 50K?

It can be a great first ultra if you respect what makes it hard. The vert is modest and the vibe is friendly, classic Rainshadow, but the technical wet footing, the mud, and the slick bridges ask for real trail skill, not just endurance. Get time on rooty, rocky, muddy singletrack, practice staying upright when you are tired, and rehearse eating while you move on terrain that keeps your eyes down. If you train the footing and pace it patiently, the cutoffs give most prepared first-timers room to finish.

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.