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Ultras · US · WI

Ice Age Trail 50

44th Annual
50K · 50K
Ran · this year's race is done.
The 2026 races were held on Saturday 9 May and all three sold out in December.
Race dateMay 9, 2026
Duration1 day
Start8:15am
When123 days ago
First held1982
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 50K
Climb not checked yet
Descent not checked yet
High point not checked yet
Time limit 9:45:00
Aid stations 11
Started not checked yet
Finished 240
Finish rate not checked yet
The course

Where it goes out and back · 11 aid stations · rust marks a stop your crew can reach

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

The 50K starts in the finish area and runs out to Horseriders Camp on the Ice Age Trail and back, over Bald Bluff both ways, for the first thirteen miles. It then runs two counterclockwise nine mile loops of the Nordic ski trail to the finish. The Ice Age Trail section is winding single track over hill after hill; the Nordic loop is wide, scenic and very runnable. The course is marked with orange ground flags.

For a change in scenery, trail direction, elevation and grade, the Ice Age Trail delivers. Expect rocks and roots on steep climbs and descents as you scramble up and over eskers, and narrow single track winding up and over hill after hill on the way to Horseriders Camp. The Nordic loops that make up the last eighteen miles are wide and runnable by comparison.

The race

What this one is

The Ice Age Trail 50 has been run in Wisconsin's Southern Kettle Moraine since 1982, which makes it one of the oldest continuously running ultras in the country. All three distances start together at the Nordic trail head north of La Grange and run on the Ice Age National Scenic Trail and the wide Nordic ski loop: dense deciduous forest, tall pines, rocky ridges, open prairie, and the lakes, kettles, kames and erratics the glaciers left behind. The hills are neither long nor steep. They are incessant. The 50 mile and the 50K both close at 6:00 p.m., and the day ends with a catered barbecue in the finish area that every runner and volunteer eats for free.

The race was conceived by ultrarunner Tom Ulik and the Badgerland Striders' president Glenn Wargolet in a Milwaukee tavern in 1981. To keep the logistics simple Glenn imagined a one mile loop in a Milwaukee County park. Tom had a different idea, and invited him for a run on the trails of the Southern Kettle Moraine. That was all it took, and the first Ice Age 50 was held there less than a year later. Runners come back: the 500 mile club, meaning ten 50 mile buckles, has more than 160 members, and twenty two of them have twenty finishes. Six aid station captains have been looking after Ice Age runners for more than two decades, among them Craig and Mary Hopper, who are in their 39th year at the Hwy 12 station.

Getting in

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

Lottery
No iceagetrail50.com
Lottery opens
does not apply to this race iceagetrail50.com
Lottery draw
not checked yet
Field cap
not checked yet
Registration
Other iceagetrail50.com
Qualifying
not checked yet
Minimum age
18 runrace.net
Transfers
No iceagetrail50.com
Deferrals
Yes iceagetrail50.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 iceagetrail50.com
Vehicles per runner
not checked yet
Pacers
No iceagetrail50.com
Muling
not checked yet
Drop bags
Yes iceagetrail50.com
Cupless
not checked yet
Course marking
Fully Marked iceagetrail50.com
Night running
No iceagetrail50.com
Dogs
Not allowed iceagetrail50.com
Headphones
not checked yet
Crew rules
Crew and spectators are best off staying in the Start/Finish area, where they will see their runner four times: at the start, at 13.3 miles, at 22.2 miles and at the finish. Bluff Road is only a mile and a half away but its parking is limited, so shuttling between the two risks missing the runner at both. Crews are not allowed at the Horserider's aid station at all. A Wisconsin State Park vehicle pass is required for the start area and the state lots. iceagetrail50.com
Pacer rules
Pacers are not allowed in any of the three Ice Age races. Pacing means a non-registered runner accompanying a registered runner on the course for more than 500 yards. iceagetrail50.com
Drop bag rules
One drop bag site, at the Start/Finish, which the course passes at 13 and 22 miles. There is a 50k tarp in the start area for it. Write your name on the bag. iceagetrail50.com
Cutoff philosophy
The 50K closes at 6:00 p.m., nine hours and forty five minutes after the start. There is one cutoff before that, at the Start/Finish aid station at 22.2 miles, at 3:10 p.m. The Tamarack aid station stays open until 4:30 p.m., unstaffed after 3:00, so there is water and food out there for the back of the field. iceagetrail50.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 Start/Finish
None · physician on site
? ? 1.50
1.50 Bluff Road ? · ? ? 0.90
2.40 Young Road ? · · ? ? 4.20
6.60 Horseriders Camp ? · · ? ? 4.30
10.90 Young Road ? · · ? ? 0.90
11.80 Bluff Road ? · ? ? 1.50
13.30 Start/Finish
None · physician on site
? ? 5.00
18.30 Tamarack ? · · ? ? 3.90
22.20 Start/Finish
None · physician on site
3:10pm ? 5.00
27.20 Tamarack ? · · ? ? 3.90
31.10 Finish
None · physician on site
6:00pm ? ?
Driving your crew

Getting your people there 6 stops with directions the race published.

Start/Finish mile 0.00

Parking. Designated Parking

Bluff Road mile 1.50 2 min drive from the stop before

Nordic Trail (Start/Finish) to Bluff Rd Aid Station #3, 1.2 mi, about 2 mins. 1. Head north on Co Rd H/Kettle Moraine Scenic Dr toward Bluff Rd, go 1.1 mi. 2. Turn right onto Bluff Rd, go 463 ft. Destination will be on the left.

Parking. Designated Parking

iceagetrail50.com
Bluff Road mile 11.80

Parking. Designated Parking

Start/Finish mile 13.30

Parking. Designated Parking

Start/Finish mile 22.20 cutoff 3:10pm

Parking. Designated Parking

Finish mile 31.10 cutoff 6:00pm

Parking. Designated Parking

Same race, other lines

Other distances and other years

Other distances
50 Mile (50M)
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.

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

+ 2 more.

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: 202 sources for this race. Hover a source link to read the sentence it came from.
44% 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
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.

Running this one?

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