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Ultras · US · OR

Thunder River

25K · 15.7 miles
Registration open
Registration is open.
Race dateOctober 31, 2026
Start10:00am
Whenin 7 days

Who's going to Thunder River?

Free. You can start with nothing.

Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Distance The race
15.7 miles
Climb
2,725 ft
Descent
2,802 ft
High point
not checked yet
Time limit The race
6:30:00
Aid stations
4
Started
not checked yet
Finished
not checked yet
Finish rate
not checked yet
The course

Where it goes point to point · 4 aid stations · rust marks a stop your crew can reach

Course line from the race's own GPX. Source file. Year of this file not known.

A point-to-point course through the Columbia River Gorge National Scenic Area. It starts at Wyeth Trailhead and travels downriver, mostly along the Gorge 400 Trail and the Pacific Crest Trail, then through the town of Cascade Locks before finishing with a loop around Thunder Island at Marine Park.

Primarily rocky, somewhat technical singletrack mixed with some smooth dirt singletrack. The course is generally very runnable, with many punchy hill climbs and some very rocky technical sections, especially through the many open talus slopes. There is a section of paved pedestrian and bike path and sidewalk through Cascade Locks in the later miles.

The race

What this one is

A fall trail race through the Columbia River Gorge, staged at Marine Park in Cascade Locks, Oregon. A point-to-point 25K and a 50K lollipop both follow the Pacific Crest Trail and Gorge 400 Trail, pass under the Bridge of the Gods into town, and finish with a loop around Thunder Island.

Getting in

Getting in Entry, lottery and what the race asks of you before race day.

Lottery
not checked yet
Lottery opens
not checked yet
Lottery draw
not checked yet
Field cap
not checked yet
Registration
UltraSignup daybreakracing.com
Qualifying
not checked yet
Minimum age
not checked yet
Transfers
No daybreakracing.com
Deferrals
No daybreakracing.com
Crew access, pacers and drop bags

The rules that shape your day Anything marked "not checked yet" is a gap in what we hold, never a no from the race.

Crew allowed
Yes daybreakracing.com
Vehicles per runner
not checked yet
Pacers
not checked yet
Muling
not checked yet
Drop bags
not checked yet
Cupless
Yes daybreakracing.com
Course marking
not checked yet
Night running
not checked yet
Dogs
Not allowed daybreakracing.com
Headphones
not checked yet
Crew rules
Crew and supporters are welcome at the start line, Cascade Locks Aid Station (#2) and the finish area only. Runners may only receive support at designated aid stations, and may not stash aid supplies along the course. daybreakracing.com
Pacer rules
not checked yet
Drop bag rules
not checked yet
Cutoff philosophy
Race cutoffs exist for several reasons, primarily safety and keeping the race on its permitted schedule. Cutoff times indicate when a runner must leave the aid station. daybreakracing.com
Aid stations

Every stop, and what you get there ● yes   ○ no   ? nobody has checked   – does not apply to this race

Mile Station Cutoff Crew access Bag Pacer Med To next
0.00 Wyeth Trailhead ? ● ? ? ? 5.30
5.30 Peregrination ? ○ ? ? ? 6.20
11.50 Cascade Locks ? ● ? ? ? 4.20
15.70 Marine Park 4:30pm ● ? ? ? ?
Driving your crew

Getting your people there 2 stops with directions the race published.

Wyeth Trailhead mile 0.00

Google Map driving directions from the Marine Park staging area: https://maps.app.goo.gl/6EW1X1ir2wDjvffG6

Parking. Parking is allowed in designated parking stalls in the Wyeth Trailhead or on the north side of Wyeth Road road shoulder only. Keep the loop road through the trailhead clear for shuttle bus arrival and unloading of runners.

daybreakracing.com
Cascade Locks mile 11.50

Google Map driving directions from the Marine Park staging area: https://goo.gl/maps/7AhiYFxgjhC6pxAp8

Parking. All crew parking is on Wa Na Pa Street at the western end of Cascade Locks only. Do not park on neighborhood streets or at the PCT trailhead where the aid station is located. Park down on Wa Na Pa Street and walk the short two blocks up the hill. There is no fee to park on Wa Na Pa Street.

daybreakracing.com
Same race, other lines

Other distances and other years

Other distances
50K (31.3 miles)
What it looks like out there

Somebody has been out there with a camera the tables say the climb is long. these say what long feels like.

2 people have been out there with a camera or a microphone.

These are other people's work and we link straight to them. Watching costs nothing and needs no account. More of them: every race we hold, on film.

Add to this page

What you know every one of these is read by a person before it changes anything

Ran this race? Tell the next runner what you know.

Nobody sees it until we have read it. No account, no sign-in.

Leave blank if it applies to the whole race.

Leave blank if it is not about one particular stop.

Optional. Something like “Cal Street, mile 62 to 78”.

Write it the way you would say it to someone at the start line.

Optional, and it decides nothing. It only tells the next runner where this is coming from.

Optional.

Optional, and never shown on the page. Only so we can ask you a question about this note.

Leave this field blank.

See something wrong or out of date? Suggest an edit.

This changes nothing on the page on its own. Somebody checks it against the race first.

Optional. Filled in for you when you start from a specific line on the page.

Copy it as it appears, so we can find it.

The corrected value.

Required. Where it came from: the race email, the runner manual, what you saw on the day.

Optional.

Optional. A screenshot or a photo of the sign works.

Optional, and it decides nothing.

Optional.

Optional, only so we can come back to you about this correction.

Leave blank if it is about the whole race.

Leave blank if it is not about one particular stop.

Leave this field blank.

Were you out there? Say which stops a text got out from.

Nobody sees it until we have read it. No account, no sign-in.

Optional, and it decides nothing.

Which stops did a text get out from?

Leave a stop blank if you did not try, or do not remember.

50K

  • Marine Park mile 0.0
  • Peregrination mile 9.6
  • Wyeth mile 15.6
  • Peregrination (2) mile 20.9
  • Cascade Locks mile 27.1
  • Marine Park mile 31.3

25K

  • Wyeth Trailhead mile 0.0
  • Peregrination mile 5.3
  • Cascade Locks mile 11.5
  • Marine Park mile 15.7
Optional. Never shown.
Seen a course preview or a film of this one? Send it over.

Somebody watches it before it goes anywhere near this page. What we are after is footage of this course, on the ground. If it would be just as true of any other race, it is not this.

Required. A line is plenty. Where the climbs are, what the footing does, what the last twenty miles look like.

Optional, and it decides nothing.

Optional.

Optional, and never shown on the page. Only so we can ask you a question about this one.

A YouTube link, a race report, a photo gallery, whatever it is.

Optional, and we credit them on the page.

Leave this field blank.

Have the GPX? Send us the link.

We want the address of the file the race publishes, not the file. We download it from there so the page can say where the line came from.

The page or file on the race's own site.

Optional, and only so we can ask you a question about it.

Are you the race director? Get in touch and we'll make it right.

We read every one of these and we write back. Every fact here carries the source it came from, and the way a wrong one gets fixed is a person checking it against what you tell us.

Required, because this is a conversation and we write back.

Tell us what is wrong, out of date, or missing on this page. We read every one of these and we will get back to you.

Optional.

So we know who we are writing back to.

Optional. Director, assistant, comms, whoever you are.

Leave this field blank.

Where this came from. Every fact on this page records its source and when we last checked it: 56 sources for this race. Hover a source link to read the sentence it came from.
29% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.
See something wrong or out of date? Suggest an edit
Ran this race? Tell the next runner what you know
Were you out there? Say which stops a text got out from
Got footage of this course? Send us the link
Are you the race director? Get in touch and we'll make it right.
Anything else: [email protected]

Ultras change. We will tell you when this one does.

Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.

No account, and nothing to cancel.

What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.

I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.

Ultras change. We will tell you when this one does.

Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.

No account, and nothing to cancel.

What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.

I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.