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Perpetua Coast Course Guide

Perpetua Coast is an Oregon Coast ultra at Cape Perpetua, just outside Yachats, and it is two races in one. It opens flat and fast on the beach and shoreline, then crosses Highway 101 and turns into hilly old-growth rainforest singletrack with real climbing and honest cutoffs. I will walk you through the course first, then give you a pacing and fueling plan that fits the flat start and the climbing back half. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

Perpetua Coast quick facts

Date
October 3 to 4, 2026 (early-October weekend)
Location
Yachats, OR, Cape Perpetua Scenic Area, about 25 mi south of Newport
Distances
50K (31.1 mi) and 20 mi on Saturday · half marathon and 10K on Sunday
Elevation gain
50K: about 5,700 ft · 20 mi: about 3,800 ft · half: about 2,500 ft
50K start
8:00 AM Saturday (20 mi at 8:05 AM)
Cutoff
50K: 9 hr (5:00 PM finish), with cutoffs at mile 11.1, 17.1, and 24.5 · 20 mi: 6 hr
Qualifier
No Western States, UTMB, or Hardrock qualifier status listed by the race

These facts come from the official race site and UltraSignup. 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 Perpetua Coast is won and lost

The 50K is a lollipop, about 31.1 miles and 5,700 feet of climbing. It starts in Yachats with a flat, quick run that includes roughly 2.7 miles of ocean beach and a stretch of the Oregon Coast Trail, then crosses Highway 101 and climbs into the Cape Perpetua Scenic Area on dirt singletrack through old-growth rainforest. Aid sits at Adobe (around mile 4.5), Perpetua Campground (around 11.1 and again near 24.5 on the way home), and Cummins (around 17.1).

The flat start: free speed, not a place to push

The opening miles are the easiest of the day and the easiest to mess up. You run on hard sand and fast shoreline trail, it feels great, and it is tempting to bank time. Resist that. This is free speed, so let it come to you and keep your effort honestly easy, because the climbing has not even started yet. People who hammer the beach and the flat OCT section show up at the Highway 101 crossing already a little cooked, and then the real course makes them pay.

Use this stretch to settle into your fueling rhythm and get your legs warm without any strain. You will be back on this runnable lower section late in the race, on tired legs, so the patience you spend here buys you a stronger finish.

The old-growth climbs: the actual race

After Highway 101 the course goes almost entirely to dirt singletrack and gets hilly fast. This is where the 5,700 feet lives, and it does not come as one clean climb you can settle into. It stacks up in waves through the rainforest, rolling up and over toward the headland that sits about 800 feet above the Pacific, with big coastline views when the fog lifts. Hike the steep pitches with purpose and run the runnable grades, and treat the whole middle of the race as effort management rather than chasing a pace.

The footing is the other half of it. Shallow spruce roots, rock, and the odd creek crossing mean you have to keep your eyes down and your feet quick, especially when things are wet. Picking clean lines through the roots costs real energy late in the day, so quick, attentive feet matter as much as your climbing legs do.

The cutoffs: the clock is part of the course

Perpetua Coast runs on hard cutoffs, and they are spaced so you cannot save all your buffer for the end. There is a soft check around 11:15 AM at mile 11.1, then hard cutoffs near 12:45 PM at mile 17.1 (Cummins) and 3:00 PM at mile 24.5, with the finish closing at 5:00 PM. That is roughly a 3.4 mph average over a course with this much vert, so the climbing miles are exactly where the math gets tight.

Plan backward from those numbers. Know what time you want to be through Cummins, give yourself a cushion on the climbs rather than the flats, and do not let the easy start fool you into thinking the buffer is bigger than it is. If you are close to a cutoff, the smart move is to keep moving steadily through aid, not to sit down.

Pacing strategy for a flat start and a climbing back half

With about 5,700 feet of gain that mostly shows up after the beach, Perpetua Coast rewards a patient front half and steady climbing effort. Run the flat by feel and the hills by grade, not by your flat-ground splits.

Pace the hills by grade, not by the watch

Your beach pace tells you nothing about how to run the old-growth climbs. What matters once you cross Highway 101 is grade-adjusted effort, so hold an output you can keep up the grade and hike the steep pitches without feeling like you are losing the race. The classic mistake here is carrying flat-section speed into the first climbs because the legs feel fine, then fading through the back half. Use a grade-adjusted pace to turn your real fitness into honest climbing and descending targets, and the rolling middle will not blow you up.

Build a vert-aware finish prediction

Do not guess your Perpetua Coast finish off a flat road 50K time. The 5,700 feet of climbing, the rooty footing, and the lollipop shape all add real minutes, and the cutoffs make an honest estimate matter more than usual. A vert-aware finish prediction that accounts for this course’s climbing gives you a realistic window and lets you work backward into the checkpoints, so you actually know how much buffer you have at mile 11.1, 17.1, and 24.5 instead of guessing on the day.

⏵ Free tools to pace this course

Fueling strategy for a long day in the forest

Most runners are out on the Perpetua Coast 50K for somewhere around 6 to 9 hours, much of it climbing rooty singletrack in cool, damp coastal air. That makes steady carbohydrate, sodium, and fluid as important as your fitness.

Carbs: steady and trained

For a 6 to 9 hour effort, aim for around 60 to 90 grams of carbohydrate per hour, and only push the high end if your gut is trained for it. The cool, wet coastal weather can hide how hard you are working and quietly blunt your appetite, so keep your intake on a schedule instead of waiting until you feel like eating. The climbing also makes it easy to forget to fuel, so tie your carbs to the aid stations at miles 4.5, 11.1, 17.1, and 24.5, and practice your exact race-day rate on hilly long runs so it feels routine.

Sodium and fluid: do not undershoot in cool weather

It is easy to drink too little when it is cool and foggy and you are not obviously dripping, but you still lose salt and fluid on a long climbing day. Aim for sodium in the 300 to 700 milligrams per liter range, leaning higher if you are a heavy or salty sweater, and keep sipping on the climbs even when you do not feel thirsty. Weigh yourself before and after a long run in similar weather to find your real sweat rate, then build the plan around your own number rather than a generic one.

⏵ Build your fueling plan

Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and the Perpetua Coast climbing 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 Perpetua Coast course profile, and your projected splits. Summit Line reads your real training, builds a plan for the climbing, and rehearses your fueling so race day is something you execute, not guess at.

Start free →Explore the demo

Perpetua Coast FAQ

How hard is the Perpetua Coast 50K?

It is a real mountain 50K wearing a beach race’s clothes. The first stretch is flat and fast along the sand and the Oregon Coast Trail, but once you cross Highway 101 the course turns into hilly old-growth singletrack and stacks up about 5,700 feet of climbing over 31.1 miles. The footing has spruce roots and rock, the climbs come in waves rather than one big push, and the hard cutoffs at miles 17.1 and 24.5 mean you cannot dawdle. Most runners find it tougher than the mileage suggests, mostly because of the vert and the technical forest trail.

How much climbing is in the Perpetua Coast 50K?

The 50K has roughly 5,700 feet of gain and the same amount of descent over about 31.1 miles. Almost none of it is in the first chunk, which is flat beach and shoreline trail. After the Highway 101 crossing the course climbs and drops repeatedly through the Cape Perpetua Scenic Area, up toward a headland that sits around 800 feet over the Pacific. The 20 miler is gentler at about 3,800 feet, and the Sunday half marathon runs about 2,500 feet of gain.

What are the cutoff times for the Perpetua Coast 50K?

The 50K has an overall 9-hour limit, with the finish closing at 5:00 PM off the 8:00 AM start. There are checkpoints along the way: a soft cutoff around 11:15 AM at mile 11.1 (Perpetua Campground), then hard cutoffs near 12:45 PM at mile 17.1 (Cummins) and 3:00 PM at mile 24.5. That works out to roughly a 3.4 mph moving average, so the climbs and the technical forest are where the clock gets tight. The 20 miler runs on a 6-hour limit. Always confirm the current cutoffs in the race-day details before you start.

What is the terrain and weather like at Perpetua Coast?

You get a little of everything. The opening 2.7 miles or so are flat ocean beach, then fast shoreline trail along Yachats, and after you cross Highway 101 it becomes almost entirely dirt singletrack that climbs and rolls through moss-draped old-growth rainforest. Expect shallow spruce roots, rock, the odd creek crossing, and big coastline views up high. Early October on the Oregon Coast is usually one of the nicer windows, but the coast does what it wants: sun, clouds, wind, rain, and fog are all on the table, so pack for wet and cool.

Is Perpetua Coast a good first 50K?

It can be a great first 50K for someone who has trained on hills and trail, and the scenery makes it a memorable one. That said, it is not a soft intro: the 5,700 feet of climbing, the rooty forest footing, and the staged hard cutoffs all ask for specific prep. If you have put in time on climbs and descents and you can hold a steady hiking and running effort, the 9-hour limit gives a prepared runner room to finish. If your training has been all flat road, give yourself a buildup with real vert first.

Is the beach section actually runnable, and does it matter?

Yes, the early beach and shoreline stretch is flat and quick, and that is exactly the trap. It feels easy and it is tempting to bank time, but burning matches on the sand leaves you flat for the climbing that starts after the Highway 101 crossing. Run the opening miles relaxed and under control, treat the flat as free speed not a place to push, and save your legs for the old-growth hills where the race is actually decided. The course is a lollipop, so you also come back through the runnable lower section late, when fresh legs really pay off.

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.