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Ultras · US · IN

OPSF5050

50K
Registration open
Registration is open.
Race dateMarch 20, 2027
Start7:00am
Whenin 147 days
First held1993

Who's going to OPSF5050?

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 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
50K The race calls this course “50K” and hasn't published a measured distance. Trail courses often run long.
Climb The race
4,500 ft
Descent
not checked yet
High point
not checked yet
Time limit The race
10:00:00
Aid stations
10
Started
not checked yet
Finished
not checked yet
Finish rate
not checked yet
The course

Where it goes lollipop · 10 aid stations

Course line from the race's own GPX. Source file. Recorded 2018.

The 50K starts at Horse Campground at 7:00 a.m., runs the counterclockwise lollipop out through Aid A and Aid B twice, then finishes on a shorter lollipop.

Year-round natural springs keep the course muddy in spots, so even dry conditions have mud. The course is single track, horse trails and a little fire road.

The race

What this one is

A trail race in Owen-Putnam State Forest, an hour west of Indianapolis, with 50 mile, 50K, 14 mile and 10K distances. Every distance starts at Horse Campground and runs counterclockwise on single track, horse trails and a little fire road. Natural springs keep it muddy year round. It is run by the non-profit Indiana Trail Running Association.

Jeff Tincher started the race in 1993 as a 50 mile race from Rattlesnake Campground. It moved to Horse Campground in 1996, and the 50K and 14 mile were added in its first ten years. The race was not run in 2013, was revived in 2014, and since 2017 Indiana Trail Running Association has owned and directed it. The club believes it is the oldest ultra in Indiana.

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
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
not checked yet
Vehicles per runner
not checked yet
Pacers
not checked yet
Muling
not checked yet
Drop bags
Yes opsf5050.com
Cupless
Yes opsf5050.com
Course marking
Fully Marked opsf5050.com
Night running
not checked yet
Dogs
Not allowed opsf5050.com
Headphones
not checked yet
Crew rules
not checked yet
Pacer rules
not checked yet
Drop bag rules
One drop bag per runner, placed at Aid A. Put your name and bib number on it. Drop bags are not limited in size, and are not protected from the elements. opsf5050.com
Cutoff philosophy
not checked yet
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 Start/Finish
NoneSignal wrong?
 ? ? ? ? ? 2.70
2.70 Aid A
NoneSignal wrong?
 ? ? ● ? ? 2.80
5.50 Aid B
NoneSignal wrong?
 ? ? ? ? ? 5.80
11.30 Aid A
NoneSignal wrong?
 ? ? ● ? ? 2.80
14.10 Aid B
NoneSignal wrong?
 ? ? ? ? ? 5.80
19.90 Aid A
NoneSignal wrong?
 ? ? ? ? ? 2.70
22.60 Start/Finish
NoneSignal wrong?
 ? ? ? ? ? 2.70
25.30 Aid A
NoneSignal wrong?
 ? ? ● ? ? 2.50
27.80 Aid A
NoneSignal wrong?
 ? ? ? ? ? 2.70
30.50 Start/Finish
NoneSignal wrong?
 5:00pm ? ? ? ? ?
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.

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

Social account

OPSF5050 (Facebook)

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: 70 sources for this race. Hover a source link to read the sentence it came from.
39% 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.