Front Range Ultra Dayze
100-miler
Registration open
Registration is open for all eight events, with a shared 200-runner cap across the whole race.
Race dateSeptember 3-7, 2026
Duration5 days
When6 days ago
First held2024
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
not checked yet
Climb
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Descent
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High point
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Time limit
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Aid stations
0
Started
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Finished
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Finish rate
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The race
What this one is
Front Range Ultra Dayze is a multi-day ultrarunning festival on a 2-mile loop through Centennial Park and the River's Edge Natural Area in Loveland, Colorado. Runners choose from eight events at once: 50k, 100-mile and 200-mile fixed-distance races, and 12-hour, 24-hour, 48-hour, 72-hour and 100-hour fixed-time races, all sharing the same start/finish and the same loop. Runners pick their own start date from a published schedule rather than a single gun time, and free camping is available at the venue for the length of the event.
First held in 2024. The inaugural year also offered a 6-hour race and an out-and-back timing setup that were not carried forward; from 2025 onward the event has run as the eight-distance lineup described above.
Getting in
Getting in
Entry, lottery and what the race asks of you before race day.
- Lottery
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No
ultrasignup.com
- Lottery opens
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not checked yet
- Lottery draw
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not checked yet
- Field cap
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200
ultrasignup.com
- Registration
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UltraSignup
ultrasignup.com
- Qualifying
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not checked yet
- Minimum age
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not checked yet
- Transfers
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No
docs.google.com
- Deferrals
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Yes
docs.google.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
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not checked yet
- Vehicles per runner
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not checked yet
- Pacers
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not checked yet
- Muling
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not checked yet
- Drop bags
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not checked yet
- Cupless
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not checked yet
- Course marking
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not checked yet
- Night running
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not checked yet
- Dogs
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not checked yet
- Headphones
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not checked yet
- Crew rules
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not checked yet
- Pacer rules
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not checked yet
- Drop bag rules
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not checked yet
- Cutoff philosophy
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not checked yet
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.
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.
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.
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: 26 sources for this race. Hover a source link to read the sentence it came from.
0% 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.
Running this one?
NavRun builds your pacing from your own training, then turns it into a plan your crew can follow: when to leave and where to park.
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