Black River Trail Classic
85K
Registration open
Registration is open on UltraSignup until Thursday, October 15 at 11:59 PM CT.
Race dateOctober 17, 2026
Start5:00am
When7 days ago
Who's going to Black River Trail Classic?
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
From the name
85K
The race calls this course “85K” and hasn't published a measured distance. Trail courses often run long.
High point
not checked yet
Time limit
The race
12:00:00
Finish rate
not checked yet
The course
Where it goes
· 2 aid stations
A combination of all the courses: start early and run the 10k course, head out on the 50k course, then finish with the 25k course. The aid stations are the same as on the course you are currently running, plus one at the start/finish area.
The race says only 11 runners have finished the 85k since 2022. There may or may not be specific signage for the 85k distance: follow the route for the distance you are currently running, with distance specific signs on each course.
The race
What this one is
Trail races in Black River State Forest near Millston, Wisconsin: a 10k, 25k, 50k and 85k, all starting and finishing at the Smrekar Lot. Courses run through woodland, wetland, ATV trail and the Wildcat hiking and biking trails, with a ridge descent into the finish. Hot food, pies and a warming shelter at the finish.
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
nurun.co
- Qualifying
-
not checked yet
- Minimum age
-
not checked yet
- Transfers
-
not checked yet
- Deferrals
-
not checked yet
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
nurun.co
- Vehicles per runner
-
not checked yet
- Pacers
-
No
nurun.co
- Muling
-
not checked yet
- Drop bags
-
Yes
nurun.co
- Cupless
-
Yes
nurun.co
- Course marking
-
Fully Marked
nurun.co
- Night running
-
Yes
nurun.co
- Dogs
-
not checked yet
- Headphones
-
not checked yet
- Crew rules
-
Crew access is not permitted at all aid stations. Crews may only assist runners within a 100 foot radius of the aid station. Crews should not interfere with other runners at the aid station. No smoking is allowed at any of the aid stations. Littering of any kind is strictly prohibited. Runners are responsible for the actions of their crew.
nurun.co
- Pacer rules
-
not checked yet
- Drop bag rules
-
You are allowed 4 drop bags for the 85k. Write bib number, racer name, mile marker, and aid station name on each bag. Bring them to bib pickup and place them in the appropriate drop off location. Drop bags will be returned to the finish line after the corresponding aid station closes. Drop bags will not be mailed.
nurun.co
- Cutoff philosophy
-
The 12 hour cut-off stays aggressive on purpose, for runners looking for a challenge.
nurun.co
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 |
| ? |
Start/Finish
|
1:25pm |
? |
? |
? |
? |
? |
| ? |
Wildcat
|
3:15pm |
? |
? |
? |
? |
? |
Same race, other lines
Other distances and other years
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.
Nobody has been out there with a camera or a microphone yet. A gap means nobody has found it, not that it is not out there. Seen a course preview or a film of this one? Send us the link.
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.
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.
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.
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.
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.
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.
Where this came from.
Every fact on this page records its source and when we last checked it: 42 sources for this race. Hover a source link to read the sentence it came from.
25% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.
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.
