Loading...
Ultras · US · CA

Burney Mountain 100

Registration open
Registration is open.
Race dateJune 18, 2027
Start4:30am
Whenin 237 days

Who's going to Burney Mountain 100?

I'm running itPlan your weeks and your aid station times I'm crewingWhen to leave, where to park, at every stop I'm pacing or cheeringAsk your runner for their Out Here link

Free. You can start with nothing.

Official website Entry Aid stations Crew access Notify me if this race changes
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 From the name
100 Mile The race calls this course “100 Miler” and hasn't published a measured distance. Trail courses often run long.
Climb
not checked yet
Descent
not checked yet
High point
not checked yet
Time limit The race
40:00:00
Aid stations
12
Started
not checked yet
Finished
not checked yet
Finish rate
not checked yet
The course

Where it goes loop · 12 aid stations · rust marks a stop your crew can reach

No official GPX on file yet. These are the aid station coordinates, not the trail. Have the GPX? Send us the link.

One loop through Lassen National Forest, the Burney Basin and the Thousand Lakes Wilderness, starting and finishing at the Burney Mountain Guest Ranch. The route depends on snow in the high country: Course A is the only version that summits Magee Peak, and Courses B, C and D adjust the upper-elevation sections.

The race publishes approximate figures for the climb and the terrain: about 15,000 feet of cumulative climbing on the race page, about 14,000 feet in the runner's guide, a lowest point near 3,000 ft and a highest near 8,600 ft, and roughly 39 miles of singletrack, 11 miles of rail trail and 54 miles of forest road. A small amount of pavement comes near the Hwy 89 and Goose Valley aid stations. Poles are recommended in most years for the Burney Mountain climb and Thousand Lakes (Tamarack to Cypress), and may be required in a year of late snowpack. June can be hot, or snow can fall on the course.

The race

What this one is

A 100-mile loop through Lassen National Forest and the Thousand Lakes Wilderness in northern California, starting and finishing at the Burney Mountain Guest Ranch in Cassel. The route passes Hat Creek Rim and climbs Burney Mountain, with views of Mount Lassen and Mount Shasta, and the final route depends on how much snow is left in the high country.

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 ultrasignup.com
Qualifying
not checked yet
Minimum age
not checked yet
Transfers
Yes ultrasignup.com
Deferrals
Yes ultrasignup.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 docs.google.com
Vehicles per runner
not checked yet
Pacers
Yes, from mile 55.00 docs.google.com
Muling
Not allowed docs.google.com
Drop bags
Yes docs.google.com
Cupless
Yes intermountainendurance.com
Course marking
Fully Marked docs.google.com
Night running
not checked yet
Dogs
not checked yet
Headphones
not checked yet
Crew rules
Runners may only enter the crew vehicle at designated crew access aid stations. Crew vehicles are not allowed to "mule" or carry items for runners. Do not drive alongside your runner. Drive slowly, prioritize runner safety, and minimize dust. Runners may be disqualified if the crew does not abide by these rules. Crew access is allowed at some stations, but not all (no crew access at Cache 22, Tamarack, Cypress or the Top of Burney Mountain). docs.google.com
Pacer rules
Up to 4 pacers are allowed, but only one at a time. Pacers must register with a race official at the start of their segment and must carry the same gear as runners. Pacers cannot carry gear for their runner. Your first pacer can join at Burney Mountain Base. Pacers can join or switch at the Base of Burney Mountain aid station (passed twice), Goose Valley rd and Black Ranch. Pacers must stay with the runner until a designated crew access point. docs.google.com
Drop bag rules
All drop bags need to be at Burney Mountain Guest Ranch between 4pm-7pm on Thursday before race start. Drop bag locations are noted on the aid station chart. docs.google.com
Cutoff philosophy
The course has generous cut-off times, and runners have 40 hours to finish. intermountainendurance.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
7.00 Cassel rd (water drop)
NoneSignal wrong?
 ? ○ ○ ○ ? 9.00
16.00 Cache 22
NoneSignal wrong?
 ? ○ ○ ○ ? 7.00
23.00 Hwy 89
NoneSignal wrong?
 ? ● ● ○ ? 14.00
37.00 Tamarack Trailhead
NoneSignal wrong?
 7:00pm ○ ● ○ ? 13.00
50.00 Cypress Trailhead
NoneSignal wrong?
 2:00am ○ ● ○ ? 5.00
55.00 Base of Burney Mtn (1st)
NoneSignal wrong?
 4:30am ● ● ● ? 8.50
63.50 Burney Mtn Summit
NoneSignal wrong?
 9:00am ○ ● ○ ? 8.50
72.00 Base of Burney Mtn (2nd)
NoneSignal wrong?
 11:30am ● ● ● ? 11.00
83.00 Goose Valley rd
NoneSignal wrong?
 3:00pm ● ● ● ? 6.00
89.00 Black ranch
NoneSignal wrong?
 5:00pm ● ● ● ? 6.00
95.00 Rail Trail (water only)
NoneSignal wrong?
 ? ○ ○ ○ ? 7.00
102.00 Burney Ranch Finish
NoneSignal wrong?
 8:30pm ? ? ? ? ?
Driving your crew

Getting your people there 5 stops with directions the race published.

Hwy 89 mile 23.00

From the Guest Ranch take HWY 299 W to CA 89 S. Drive10 miles and arrive at Hat Creek Fire, HWY 89 Aid Station, on the left. (Please do not park in front of Fire Station Bays)

Parking. Please do not park in front of the Fire Station bays.

docs.google.com
Base of Burney Mtn (1st) mile 55.00 cutoff 4:30am

From Hwy 299, turn onto Tamarack Road and follow it for approximately 8.4 miles. Look for the sign for Burney Mountain and Thousand Lakes—this turn will also have a “Crew Turn Left Here” sign. Turn left and continue for about 3.7 miles until you reach the aid station.

docs.google.com
Base of Burney Mtn (2nd) mile 72.00 cutoff 11:30am

From Hwy 299, turn onto Tamarack Road and follow it for approximately 8.4 miles. Look for the sign for Burney Mountain and Thousand Lakes—this turn will also have a “Crew Turn Left Here” sign. Turn left and continue for about 3.7 miles until you reach the aid station.

docs.google.com
Goose Valley rd mile 83.00 cutoff 3:00pm

From the Base of Burney Mtn Aid Station drive out the way you came in 3.7 miles. Turn right on to Tamarack Rd. Drive for approximately 8.4 miles to CA 299. Turn right (East) on to CA 299. Continue east for 6 tenths of a mile. Turn Left on to Goose Valley Rd and arrive at Aid Station.

docs.google.com
Black ranch mile 89.00 cutoff 5:00pm

From Goose Valley Rd and CA 299 drive east on CA 299. Drive 2.9 miles. Turn left on to Black Ranch Rd. Drive 2.4 miles. Arrive at Aid Station (Rail Trail and Black Ranch Road).

docs.google.com
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.

One person has been out there with a camera or a microphone.

Social account

intermountain_endurance_runs

Social account

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.

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: 167 sources for this race. Hover a source link to read the sentence it came from.
36% 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.